This plugin adds a Like-Button wherever you want on your blog. Before or after the content as well as a sidebar-widget. And many more!
Like Gate allows you to reveal some hidden/secret content when the user likes the article. Therefore increasing the likeness of your articles.
Facebook Like Lock for WordPress. Locks your content and user can unlock by clicking on like button.
Sidebar widget and template function to display an ordered blog list of subsites (with post count) on a page of the WordPress MU main site.
Improved search tools and template functions including Google-like search result snippets (on-the-fly contextual abstract), search statistics and hit-
Using the restaurant menu plugin you can create menus for food, drink or products on any WordPress page.