If enough people mention something on Twitter then I’m ultimately going to check it out. It happens with news stories and viral videos, and it happened a couple of days ago with Quora.
Quora is a new(ish) site that revolves around questions and answers. People ask questions, other people answer them. A fairly simple proposition.
Of course we’ve seen this kind of thing before with sites like Yahoo Answers, but Yahoo fundamentally failed to help people connect, whereas Quora has inbuilt networking by default (sign in via Twitter or Facebook to see what I mean). After all, it’s not what you know, it’s who you know.