Big Twitters

Alright, so I have yet to understand (or even check out) this whole twitter craze, but I hear so much about it on the news. I can't quite understand how this is such a big trend, maybe I'm just too used to Facebook! But, with current and former Congress members, President, and former Presidential staff, this must be both fun to use and nice for constituents who don't care to read 25pg statements, I guess 140 characters is a good way to keep their responses clear and concise.