To the widget I added two blocks of Amazon ad code, each surrounded by the Iframes tag. When I click Save, the working icon rotates forever, the same as with the Text widget.
Lane
]]>When using the admin_footer hook, the widget metabox gets duplicated and shows the entire metabox in the admin_footer as well as the admin_footer sidebar.
I think doing avoiding the widgets page all together is probably a good idea to avoid breaking the page completly which would require manually disabling the plugin.
Anyway, this is a great idea for a plugin.
]]>