FeedRinse launched yesterday and offers a variety of useful feed filtering options. You simply provide FeedRinse all of your RSS feeds through a variety of methods (entering the individual URLs, importing an OPML feed, or using their bookmarklet), then setup your filters, and out comes a nice and clean feed.

FeedRinse offers a free plan, allowing 3 feeds and lacking the profanity filter, as well as a Plus and Premium option (at $5/mo and $8/mo respectively), which offers more feeds (15 and 300) and including the profanity filter.

Check out FeedRinse’s tour to see the options it gives users, definitely a useful web 2.0 application