According to Polymeme website, their “site uses a unique buzz-tracking approach to identify what’s currently hot in 20 areas, ranging from economics to evolution, and present it to the reader along with all sources that are currently talking about it. Thus, you can track how ideas – or memes – propagate through this new emerging networked public sphere. We would consider our mission a success if we expose you to the maximum number of new ideas on every 100 news items you read!”
Okay it was not that non-mainstream because the top two people here were Obama and McCain, top two topics were energy and oil, and top two places were US and China. However, there was plenty of new and progressive stuff…the opinions that makes one think…just look at their science page!