Cong. Rehberg has a post up at Electric City Weblog where he is introducing America Speaks Out. I have already added it to the Blogroll, and have just begun to investigate its potential. What I like about it so far, is that it seems to allow interaction from constituents with their elected representatives and each other.
While Obama did great things with the Intertubes during his campaign, (although most of it seemed to be a way to bypass campaign finance limits) and his Organizing for America is still extant, that site seems to be more of the directive nature. This new site may actually make the truly national public square with kiosks oriented to interests.
Could be interesting.