It's probably easier to make your own Twitter lol.  All it is, is just a page where you put some text - easily do that in HTML.

IDK, but Twitter seems to be one of the most useless of the social networking sites I've seen >_>  Seriously, stick random messages about yourself?  Not only is it very tedious (assuming you do it often) I fail to see why people would be interested in you going to school, finishing your homework etc (unless they consider you someone special...).

Blogs allow you to put more useful info on them...

Or I'm not getting the whole system perhaps.