Karim A. founder of NoiseRiver:

NoiseRiver is a web application based on the friendfeed’s API that aims to extend friendfeed with some notions like: interests and neigborhood. You still have all the flow that is in friendfeed but the flow is, from now, on colored. Green meaning that you’ll probably like the entry and red meaning that you’ll probably hate it.

Noise filtering is the next step in social networks, being able to surface what you’re interested in and content from people you trust, is very important.

FriendFeed recently added personalized recommendations but NoiseRiver works differently by giving you more fine-grained control about your preferences.

Louis Gray wrote a nice wrap up about the service.

Karim is a very nice and talented guy and I’m happy to have given my (humble) contribution to the project. I wishes the best for NoiseRiver.