Looks interesting, and keeps archives (unlike Action Streams for MT).

Track/stalk your mates across the web. They just mailed me because some people are tracking me, which was a bit spooky, though they're only accessing public info. (Combined with OpenID, this could be a great distributed social network thingy.)

Looks like it's a pretty web-based RSS aggregator, but if you try to do anything at all after logging in, it throws an error...

"Feed Rinse is an easy to use tool that lets you automatically filter out syndicated content that you aren't interested in. It's like a spam filter for your RSS subscriptions."