We’ve received multiple reports that users have been unable to login to this site and have received a message saying “Access Denied – This site is protected…” We’re not sure how wide reaching this problem is, but wanted to let you know that this message isn’t targeting you, specifically, if you have received it. It’s a piece of software that detects spam (and usually works pretty well), but sometimes detects false positives. It seems something has triggered more false positives than usual. We are looking into the problem and hope to have it fixed shortly. In the mean time, please email me if you are having the problem so we can get a sense of how many people this is affecting. If you are not having the problem, please add a comment to this post. If you cannot comment at the moment and have something important to say, please make a note of it elsewhere so you can post it when the problem is fixed.
Updated 2/21/2014, 2:35pm: We believe this has been resolved. If you continue to experience issues logging in, please email Ben as mentioned above.