Twitter's new official Tweet Button : who's tested it?

I'm working on a website where a 'Tweet This' type button is essential (as is a facebook 'like').

About a week ago Twitter launched their own official Tweet button. I'm curious to hear anyone's experiences with using it, particularly in comparison to TweetMeme and John Resig's ReTweet script.

I'm interested in any performance issues, any general tips or 开发者_如何学Pythonthings not to do when implementing a Tweet button.

I would prefer the official Tweet button, since Twitter has control over it and updates would be automatic.

For my site, the official button shows different value from TweetMeme