Comments have been off for a while now because the time we spent managing the comments was cutting into the time we were getting work done. We were having difficulty keeping up, and frankly there's no defeating spam bots. Some of the old issues recurred on older posts recently (spam, NSFW links, etc.) and while we were trying to clean them up, a few benign comments got caught in the net. The situation is unfortunately at a point where we want to delete all comments and lock the old posts down. If you have any old comments or conversations you'd like to preserve, you should definitely back them up. We'll lock posts down by the end of the week so that should give you enough time. Thanks for your understanding! It's not my favorite thing, but given the choice between monitoring comments and making more comics, comics wins out (and is a win for everyone, I think). As always, if you have comments or thoughts you'd like to share with us, hit up on twitter or email! Thanks!