It looks like there might be a bad banner ad going around since this site and a number of other webcomics seem to be throwing alerts because of AVG's link scanner. These go away when javascript is blocked which makes it feel very bannery to me, but it is something that you might want to look into if you have control over what shows up in your ads since this might be a case of a banner being used to launch a drive-by infection. It also might just be a false positive from AVG, but I'm not about to check it out on my home computer.
