RSSknip is a new subscription service that tracks keywords in RSS news feeds (the service currently monitors over 1.1 million feeds, with almost 500 feeds being added daily. You can try the service for free for two weeks; after that you’ll have to pay $59.95/year for the service.Bloglines essentially offers this same function, but

Nextaris is a new service of Surfwax that aims to help you get control over your research. Registration for an account is free, for 100MB worth of storage space. For a yearly fee, you can get 200MB of storage. There’s a rather simple page where you can use a number of search engines, and save