Question is, will it turn out to be "News Feed" feature of FB or FB Beacon? Their founding team were present when FB introduced News Feed and Beacon. I'm sure

Question is, will it turn out to be "News Feed" feature of FB or FB Beacon? Their founding team were present when FB introduced News Feed and Beacon. I'm sure they've given lot of thought to it. Common sense dictates, it is screwed up move. I had the same thought when I saw news feed feature. But it turned out to be pretty rad and successful. Not sure what Quora team are envisioning here.