Another service that lets you do Facebook-style pokes and slaps at friends.

Based on Summize, this service collects Twitter messages with words such as love, hate, think, believe, wish, and feel and displays them on its site with automatic updates.

Mashup of Twitter, Jaiku, and Pownce public timelines. You can also post from its interface.

twittpoll.comYou can participate on polls using Twitter through Twitpoll.

tweetshots enables you to take a twitter tweet to tumblr or embed in other pages/blogs or send to email. tweetshots are tweet screenshots, automated.

TwitterAnswers combines Twitter and Mosio, so that you can send questions over Twitter and have them answered by other people.

Twitter Karma is a tool for managing your Twitter friends and followers, providing ways of sorting and filtering them as well as bulk following and bulk unfollowing them.

Take notes anywhere using Twitter (tags included).

This site generates a mosaic of user icons of those with a large number of followers on Twitter.

If you have friends on Twitter who are updating every 10 seconds and are irritating the hell out of you, you can simply now snooze them away using this tool.