Btw yousaytoo is not a twitter clone. It has advanced microblogging features

The Yousaytoo Buzzer isn't the twitter clone, because in Yousaytoo Buzzer you can answer on many different questions and create your own questions. Yousaytoo's users Buzzer is more interesting to read then Twitter.

Yousaytoo has many other features, like journal, game upload, picture upload.

I don't know too much about twitter clone. I would like to read some literature about that issue.