A measuring stick for how positive, or happy, a particular Tweep is

After siging up, any track that you ‘love’ on lastfm will automatically generate a tweet from you that has the track’s artist and name, as well as a link to it so your followers can give it a listen

Find retweet or RT rank of any twitter user

Tip calculator for Twitter. Check out how much you have to tip for a certain amount of money using your mobile phone

twAnswers is a brand new question-answer type community for twitter. it has a feature which tries to guess the answer based on keywords in the question using yahoo and wiki answers

Tweetbar puts your tweets into email, websites and forum signatures

A repository for all sorts of manglings of the English language as used on Twitter

a Twitter app that visualizes your friends in a recursive tree

TwitStamp creates a static image that automatically shows your latest tweet! You can use it on blogs, forums, websites... wherever you want!

Who has the best twitter avatar? Rate twitter avatars of people you follow on twitter. Best. Avatar. Ever.