Blastfeed

Blastfeed - proposes a service on the internet where users can filter the RSS feeds they subscribe to in order to get only the pieces of information they are interested in. Pushes information in real time on any media channel, e.g. email, RSS, IM or web services. Can handle any RSS formats available, from 0.9x and 1.0 to 2.0, Podcasts, ATOM, as well as any XML publishing formats