The site was down for a while (not sure how long, maybe a few hours) this afternoon do to the site exceed it's bandwidth limit for the month. In a sense it's a good problem to have, but I apologize for not monitoring it and increasing the limit before the outage occurred
By the way, have you noticed that the right column of ads is gone for registered users? There were a couple tools over there - Google Search of this site and Yahoo Search. Let me know if you were in the habit of using those tools and I'll find a way to bring them back.