Directory

Keyword = API
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Tweetable
The tweetable Wordpress plugin ads a "tweet this" badge (similar to digg this button) to your posts, and once a post gets twittered it turns into a "r...
http://www.webmaster-source.com/tweetable-twitter-plugin-wordpress/ - detail
Google PR :
Feedburner Count
Feedburner Count is a plugin that uses the Feedburner awareness API to get the number of subscribers for you in plain text
http://devthought.com/projects/wordpress/feedburnercount/ - detail
Google PR :
AnswersMaker
AnswersMaker automatically creates comments on your blog using Yahoo Answers and the Alchemy API. AnswersMaker runs as a cron job on your server. E...
http://plugins.moomoomoo.com/answersmaker - detail
Google PR :