diff --git a/content/base/public/nsINode.h b/content/base/public/nsINode.h
index 730e228c41d..d8b614c149a 100644
--- a/content/base/public/nsINode.h
+++ b/content/base/public/nsINode.h
@@ -262,7 +262,10 @@ public:
    *
    * @throws NS_ERROR_OUT_OF_MEMORY in some cases (from BindToTree).
    */
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify) = 0;
+  nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify)
+  {
+    return InsertChildAt(aKid, GetChildCount(), aNotify);
+  }
   
   /**
    * Remove a child from this node.  This method handles calling UnbindFromTree
diff --git a/content/base/src/nsGenericDOMDataNode.cpp b/content/base/src/nsGenericDOMDataNode.cpp
index 07beaba6a4e..b8657b9aea6 100644
--- a/content/base/src/nsGenericDOMDataNode.cpp
+++ b/content/base/src/nsGenericDOMDataNode.cpp
@@ -824,12 +824,6 @@ nsGenericDOMDataNode::InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
   return NS_OK;
 }
 
-nsresult
-nsGenericDOMDataNode::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  return NS_OK;
-}
-
 nsresult
 nsGenericDOMDataNode::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
 {
diff --git a/content/base/src/nsGenericDOMDataNode.h b/content/base/src/nsGenericDOMDataNode.h
index d19ad7ab289..fd58c047bcc 100644
--- a/content/base/src/nsGenericDOMDataNode.h
+++ b/content/base/src/nsGenericDOMDataNode.h
@@ -189,7 +189,6 @@ public:
   virtual PRInt32 IndexOf(nsINode* aPossibleChild) const;
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
   virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
   virtual nsresult PreHandleEvent(nsEventChainPreVisitor& aVisitor);
   virtual nsresult PostHandleEvent(nsEventChainPostVisitor& aVisitor);
diff --git a/content/base/src/nsGenericElement.cpp b/content/base/src/nsGenericElement.cpp
index 1e5188ce950..db5fae2ec6a 100644
--- a/content/base/src/nsGenericElement.cpp
+++ b/content/base/src/nsGenericElement.cpp
@@ -2435,17 +2435,6 @@ nsGenericElement::doInsertChildAt(nsIContent* aKid, PRUint32 aIndex,
   return NS_OK;
 }
 
-nsresult
-nsGenericElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  // Make sure to _not_ call the subclass InsertChildAt here.  If
-  // subclasses wanted to hook into this stuff, they would have
-  // overridden AppendChildTo.
-  // XXXbz maybe this should just be a non-virtual method on nsINode?
-  // Feels that way to me...
-  return nsGenericElement::InsertChildAt(aKid, GetChildCount(), aNotify);
-}
-
 nsresult
 nsGenericElement::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
 {
diff --git a/content/base/src/nsGenericElement.h b/content/base/src/nsGenericElement.h
index 0fff9579172..34a828f77c5 100644
--- a/content/base/src/nsGenericElement.h
+++ b/content/base/src/nsGenericElement.h
@@ -325,7 +325,6 @@ public:
   virtual PRInt32 IndexOf(nsINode* aPossibleChild) const;
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
   virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
   virtual nsresult PreHandleEvent(nsEventChainPreVisitor& aVisitor);
   virtual nsresult PostHandleEvent(nsEventChainPostVisitor& aVisitor);
diff --git a/content/html/content/src/nsHTMLOptGroupElement.cpp b/content/html/content/src/nsHTMLOptGroupElement.cpp
index 200a3da4f48..c091997d463 100644
--- a/content/html/content/src/nsHTMLOptGroupElement.cpp
+++ b/content/html/content/src/nsHTMLOptGroupElement.cpp
@@ -77,7 +77,6 @@ public:
   // nsGenericElement
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
   virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
 
   // nsIContent
@@ -215,12 +214,6 @@ nsHTMLOptGroupElement::InsertChildAt(nsIContent* aKid,
   return nsGenericHTMLElement::InsertChildAt(aKid, aIndex, aNotify);
 }
 
-nsresult
-nsHTMLOptGroupElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  return nsHTMLOptGroupElement::InsertChildAt(aKid, GetChildCount(), aNotify);
-}
-
 nsresult
 nsHTMLOptGroupElement::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
 {
diff --git a/content/html/content/src/nsHTMLScriptElement.cpp b/content/html/content/src/nsHTMLScriptElement.cpp
index bac480978e1..d0f850acd17 100644
--- a/content/html/content/src/nsHTMLScriptElement.cpp
+++ b/content/html/content/src/nsHTMLScriptElement.cpp
@@ -366,7 +366,6 @@ public:
                               PRBool aCompileEventHandlers);
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
 
   virtual nsresult GetInnerHTML(nsAString& aInnerHTML);
   virtual nsresult SetInnerHTML(const nsAString& aInnerHTML);
@@ -486,17 +485,6 @@ nsHTMLScriptElement::InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
   return rv;
 }
 
-nsresult
-nsHTMLScriptElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  nsresult rv = nsGenericHTMLElement::AppendChildTo(aKid, aNotify);
-  if (NS_SUCCEEDED(rv) && aNotify) {
-    MaybeProcessScript();
-  }
-
-  return rv;
-}
-
 nsresult
 nsHTMLScriptElement::Clone(nsINodeInfo *aNodeInfo, PRBool aDeep,
                            nsIContent **aResult) const
diff --git a/content/html/content/src/nsHTMLSelectElement.cpp b/content/html/content/src/nsHTMLSelectElement.cpp
index e4b00d19a50..51460d7412b 100644
--- a/content/html/content/src/nsHTMLSelectElement.cpp
+++ b/content/html/content/src/nsHTMLSelectElement.cpp
@@ -255,7 +255,6 @@ public:
   virtual PRBool IsFocusable(PRInt32 *aTabIndex = nsnull);
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
   virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
 
   // Overriden nsIFormControl methods
@@ -563,12 +562,6 @@ nsHTMLSelectElement::InsertChildAt(nsIContent* aKid,
   return NS_OK;
 }
 
-nsresult
-nsHTMLSelectElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  return InsertChildAt(aKid, GetChildCount(), aNotify);
-}
-
 nsresult
 nsHTMLSelectElement::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
 {
diff --git a/content/html/content/src/nsHTMLStyleElement.cpp b/content/html/content/src/nsHTMLStyleElement.cpp
index 0caa76d7576..db5e1800aa9 100644
--- a/content/html/content/src/nsHTMLStyleElement.cpp
+++ b/content/html/content/src/nsHTMLStyleElement.cpp
@@ -76,7 +76,6 @@ public:
 
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
   virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
   virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
                               nsIContent* aBindingParent,
@@ -186,17 +185,6 @@ nsHTMLStyleElement::InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
   return rv;
 }
 
-nsresult
-nsHTMLStyleElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  nsresult rv = nsGenericHTMLElement::AppendChildTo(aKid, aNotify);
-  if (NS_SUCCEEDED(rv)) {
-    UpdateStyleSheet();
-  }
-
-  return rv;
-}
-
 nsresult
 nsHTMLStyleElement::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
 {
diff --git a/content/html/content/src/nsHTMLTextAreaElement.cpp b/content/html/content/src/nsHTMLTextAreaElement.cpp
index f5af09b27a5..5833e682783 100644
--- a/content/html/content/src/nsHTMLTextAreaElement.cpp
+++ b/content/html/content/src/nsHTMLTextAreaElement.cpp
@@ -123,7 +123,6 @@ public:
   // nsIContent
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
   virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
   virtual PRBool ParseAttribute(PRInt32 aNamespaceID,
                                 nsIAtom* aAttribute,
@@ -511,17 +510,6 @@ nsHTMLTextAreaElement::InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
   return rv;
 }
 
-nsresult
-nsHTMLTextAreaElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  nsresult rv;
-  rv = nsGenericHTMLFormElement::AppendChildTo(aKid, aNotify);
-  if (!mValueChanged && mDoneAddingChildren) {
-    Reset();
-  }
-  return rv;
-}
-
 nsresult
 nsHTMLTextAreaElement::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
 {
diff --git a/content/svg/content/src/nsSVGFilterElement.cpp b/content/svg/content/src/nsSVGFilterElement.cpp
index 9e7a9a27739..e71e9833057 100644
--- a/content/svg/content/src/nsSVGFilterElement.cpp
+++ b/content/svg/content/src/nsSVGFilterElement.cpp
@@ -221,16 +221,6 @@ nsSVGFilterElement::InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
   return rv;
 }
 
-nsresult
-nsSVGFilterElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  WillModify();
-  nsresult rv = nsSVGFilterElementBase::AppendChildTo(aKid, aNotify);
-  DidModify();
-
-  return rv;
-}
-
 nsresult
 nsSVGFilterElement::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
 {
diff --git a/content/svg/content/src/nsSVGFilterElement.h b/content/svg/content/src/nsSVGFilterElement.h
index 43ea82124d3..ec754c57879 100644
--- a/content/svg/content/src/nsSVGFilterElement.h
+++ b/content/svg/content/src/nsSVGFilterElement.h
@@ -74,7 +74,6 @@ public:
   // nsIContent
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
   virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
   virtual nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
                            nsIAtom* aPrefix, const nsAString& aValue,
diff --git a/content/svg/content/src/nsSVGFilters.cpp b/content/svg/content/src/nsSVGFilters.cpp
index aa62bfd7047..284ff125bba 100644
--- a/content/svg/content/src/nsSVGFilters.cpp
+++ b/content/svg/content/src/nsSVGFilters.cpp
@@ -659,7 +659,6 @@ public:
   // nsIContent
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
   virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
 
 protected:
@@ -843,22 +842,6 @@ nsSVGFEComponentTransferElement::InsertChildAt(nsIContent* aKid,
   return rv;
 }
 
-nsresult
-nsSVGFEComponentTransferElement::AppendChildTo(nsIContent* aKid,
-                                               PRBool aNotify)
-{
-  nsCOMPtr<nsIDOMSVGFilterElement> filter = do_QueryInterface(GetParent());
-  nsCOMPtr<nsISVGValue> value = do_QueryInterface(GetParent());
-  if (filter && value)
-    value->BeginBatchUpdate();
-  nsresult rv = nsSVGFEComponentTransferElementBase::AppendChildTo(aKid,
-                                                                   aNotify);
-  if (filter && value)
-    value->EndBatchUpdate();
-
-  return rv;
-}
-
 nsresult
 nsSVGFEComponentTransferElement::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
 {
@@ -1367,7 +1350,6 @@ public:
   // nsIContent
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
   virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
 
 protected:
@@ -1529,20 +1511,6 @@ nsSVGFEMergeElement::InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
   return rv;
 }
 
-nsresult
-nsSVGFEMergeElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  nsCOMPtr<nsIDOMSVGFilterElement> filter = do_QueryInterface(GetParent());
-  nsCOMPtr<nsISVGValue> value = do_QueryInterface(GetParent());
-  if (filter && value)
-    value->BeginBatchUpdate();
-  nsresult rv = nsSVGFEMergeElementBase::AppendChildTo(aKid, aNotify);
-  if (filter && value)
-    value->EndBatchUpdate();
-
-  return rv;
-}
-
 nsresult
 nsSVGFEMergeElement::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
 {
diff --git a/content/svg/content/src/nsSVGScriptElement.cpp b/content/svg/content/src/nsSVGScriptElement.cpp
index dd54a09aaa1..f9c3068353b 100644
--- a/content/svg/content/src/nsSVGScriptElement.cpp
+++ b/content/svg/content/src/nsSVGScriptElement.cpp
@@ -103,7 +103,6 @@ public:
                               PRBool aCompileEventHandlers);
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
     
 protected:
   /**
@@ -399,17 +398,6 @@ nsSVGScriptElement::InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
   return rv;
 }
 
-nsresult
-nsSVGScriptElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  nsresult rv = nsSVGScriptElementBase::AppendChildTo(aKid, aNotify);
-  if (NS_SUCCEEDED(rv) && aNotify) {
-    MaybeProcessScript();
-  }
-
-  return rv;
-}
-
 //----------------------------------------------------------------------
 // implementation helpers
 
diff --git a/content/svg/content/src/nsSVGStyleElement.cpp b/content/svg/content/src/nsSVGStyleElement.cpp
index 28a1bac234a..f3691672154 100644
--- a/content/svg/content/src/nsSVGStyleElement.cpp
+++ b/content/svg/content/src/nsSVGStyleElement.cpp
@@ -66,7 +66,6 @@ public:
   // nsIContent
   virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                                  PRBool aNotify);
-  virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
   virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
   virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
                               nsIContent* aBindingParent,
@@ -153,17 +152,6 @@ nsSVGStyleElement::InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
   return rv;
 }
 
-nsresult
-nsSVGStyleElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  nsresult rv = nsSVGStyleElementBase::AppendChildTo(aKid, aNotify);
-  if (NS_SUCCEEDED(rv)) {
-    UpdateStyleSheet();
-  }
-
-  return rv;
-}
-
 nsresult
 nsSVGStyleElement::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
 {
diff --git a/content/xtf/src/nsXTFElementWrapper.cpp b/content/xtf/src/nsXTFElementWrapper.cpp
index f4636bafe75..c0010d29565 100644
--- a/content/xtf/src/nsXTFElementWrapper.cpp
+++ b/content/xtf/src/nsXTFElementWrapper.cpp
@@ -225,24 +225,6 @@ nsXTFElementWrapper::InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
   return rv;
 }
 
-nsresult
-nsXTFElementWrapper::AppendChildTo(nsIContent* aKid, PRBool aNotify)
-{
-  nsresult rv;
-
-  nsCOMPtr<nsIDOMNode> domKid;
-  if (mNotificationMask & (nsIXTFElement::NOTIFY_WILL_APPEND_CHILD |
-                           nsIXTFElement::NOTIFY_CHILD_APPENDED))
-    domKid = do_QueryInterface(aKid);
-  
-  if (mNotificationMask & nsIXTFElement::NOTIFY_WILL_APPEND_CHILD)
-    GetXTFElement()->WillAppendChild(domKid);
-  rv = nsXTFElementWrapperBase::AppendChildTo(aKid, aNotify);
-  if (mNotificationMask & nsIXTFElement::NOTIFY_CHILD_APPENDED)
-    GetXTFElement()->ChildAppended(domKid);
-  return rv;
-}
-
 nsresult
 nsXTFElementWrapper::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
 {
diff --git a/content/xtf/src/nsXTFElementWrapper.h b/content/xtf/src/nsXTFElementWrapper.h
index 0f5e0ad3bdb..61ae6c81d65 100644
--- a/content/xtf/src/nsXTFElementWrapper.h
+++ b/content/xtf/src/nsXTFElementWrapper.h
@@ -84,7 +84,6 @@ public:
                               PRBool aNullParent = PR_TRUE);
   nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
                          PRBool aNotify);
-  nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify);
   nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
   nsIAtom *GetIDAttributeName() const;
   nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,