Know About It aims to help you see the content that is most important to you across your networks and make it easier to stay on top of the topics you care about. Services like Know About It, Summify, and Percolate are working hard to answer the content overload problem. Knowabout.it brings recommendations to the next level with intuitive analysis of multiple data sources to truly show what you want to see, not just aggregated stories that were shared the most.
It starts off by scanning all the links in your Twitter, Facebook, Tumblr, and Google Buzz streams. Then brings in your RSS feeds (including Google Reader's), Twitter Lists, LinkedIn data, and people you follow on Disqus. Even if you don't have time to read it's recommendations now you can save some for later using the seamless integration with Read it Later and Instapaper. The system learns even more about you when you like or dislike individual items using the web interface.
A daily summary email is sent according to your specifications as well as automatic alerts based on sources or content. Using the filters on the website you can drill down in to the type of media (photo, video), recommendations inside and out of your network, or potentially missed items that come from low volume sources that tend to get lost in the noise.
Give it a try today and let me know what you think. Once you signup and add your sources be sure to give it about an hour to work through your content and learn about you.