Quora is Exploding
Doesn't it seem like you're hearing about Quora just as much as you were hearing about Twitter right before it exploded? There's a reason for that: interest in Quora is exploding, at least according to Dustin Curtis's inbox. He says in his post that the tipping point seems to have been December 26, when "something strange happened." He doesn't say what, but I think it may have been this widely linked-to TechCrunch post about why Flickr didn't build Instagram, which was sourced from a Quora thread. Related: Why did Yahoo/Google Answers and related efforts crash, but Formspring and Quora (and VYou?) start taking off? The "social" feel of them?
Update: A Quora engineer provides the explanation and describes the impact on its servers, which were not prepared for the 10x load. The TechCrunch post(s) mentioned above contributed.