Excerpted from official website and key features:
"- Find the most relevant links:
Sauna scans your Twitter stream, Facebook and RSS feeds looking for links.
- Extract images, video and text:
Sauna automatically extracts the important text and images from each link. You don't even have to visit the site!
- Sauna learns what you like:
Over time, Sauna learns what types of links you like, and hides the ones you don't."
Request an invite and try out here: http://www.sauna.io