Like Frank McPherson and Ken Smith, I have also signed up for TweetFeed. I added several of the feeds to a river of tweets I created using the Granary tool, the TweetFeed tweets definitely look cleaner in the flow. It sounds like there is more to come, so I will be watching! Dave Winer did create a tool some time ago (tweetsToRss) to create RSS feeds of tweets, here is an example river of the output from that tool.