I updated the bug requesting that they add my Yahoo! Search Sidebar to Mozilla Update. All I had to do was provide them with a direct link to the .xpi file on my new sourceforge project page
Lexitaire — my word game for iPhone, iPad, Mac, and Apple TV. Learn more.
Update: It’s now featured on Mozila Update at:
https://addons.update.mozilla.org/extensions/moreinfo.php?application=firefox&version=1.0&os=Windows&id=477
and on extensionroom.mozdev.org at:
http://extensionroom.mozdev.org/more-info/yahoo_search_sidebar
and on http://www.extensionmirror.nl at:
http://www.extensionsmirror.nl/index.php?showtopic=2703&hl=yahoo