Aggregator applications
Lazyfeed lets you watch live updates on every topic you care about. Real-time updates on those topics will continuously flow in automatically.
Allows you to build a customised feed of made up of content your friends on other collaborative sites have shared.
Trackle is a service that tracks all of your personalized information on the Web, all in one place.
Digg is the most popular social bookmarking application. Users select and promote stories by digging them, the top ones are listed on the frontpage.
The webs technology news site of record, Techmeme spotlights the hottest tech stories from all around the web on a single page.
Twine is an application to collect online content - videos, photos, articles, Web pages, products - and bring it all together by topic.
Noovo recommends stories, photos, videos, events, people and groups that may be of interest to you. You can follow any web feeds, publish your own content or republish content you discover on Noovo or elsewhere.
Socialmedian enables you to easily keep up-to-date on the news that matters to you and to people who share your interests.
Sphinn is a social news site for search and interactive marketers.
Cliqset.com allows users to merge the content from all of their social networking sites into one information stream.