Netscape has soft-launched beta.netscape.com as an answer to digg.com. I haven't really had any time to play with it yet, so I don't have an opinion yet. Just wanted to post a note in case people hadn't seen the site yet. Opinion forthcoming.
RT @ryanbeckwith: Under the Constitution, the House tweets. If the Senate retweets, it goes to the President, who favs it into law.