This site provides several tools and how-tos for creating RSS feeds from Twitter now that Twitter has eliminated the ability to do it directly from the site.
Update: @TwitterGlobalPR has tweeted some factoids this afternoon. Twitter saw its highest rate of tweets per second last night with the peak coming with 5,106 at 11:00 p.m. EST. Between 10:45 p.m. and 12:30 a.m. EST Twitter average 3440 tweets per second. It is notable that Twitter did not crash under the load. A year ago at this time Twitter was having problems surrounding people tweeting about the soccer World Cup. This year the most notorious man in the world is killed and the company can handle it fine.
""People don't use Twitter here, hence they don't realize the attention they're getting," Athar said, referring to himself simply as a "tweeter" who happened to be awake when the action broke out. "Ignorance is bliss.""