Best Internet Marketing Widgets Resource Center 

Widgipedia is an enormous directory of all things widget. It includes a widget gallery, lists of widget developers, a "Request a Widget" marketplace that connects developers with people who want specific projects done and more.

The extensive list of widgets ranges from those employed by major sites (a syndicated store offered by NBC that you can put on your site so visitors can buy products from the shows that you write about) to the whimsical (a desktop widget that is a live cam of the flamingos in the Smithsonian's National Zoo).