Hot off the presses from the official Twitter blog, we learn they're buying Atebit's Tweetie, renaming it Twitter for iPhone, and making it free. Atebit's founder, Loren Brichter, will become a key member of their mobile team. What brought this on?

Careful analysis of the Twitter user experience in the iTunes AppStore revealed massive room for improvement. People are looking for an app from Twitter, and they're not finding one. So, they get confused and give up. It's important that we optimize for user benefit and create an awesome experience.

Twitter also states they will eventually launch Tweetie for iPad with Brichter's help. The Atebits blog presents his thoughts on his journey so far and the future ahead.

Congratulations to all involved, we look forward to it.

[Thanks to our Jonathan for the tip!]