This module works as I desire (signatures after comments in forums) unless I use AntiSpam. In that case, the signatures on the comments go away. I suspect AntiSpam is the culprit, but this is one of those things that needs to be coordinated between modules, and unfortunately, AntiSpam seems even less supported than this module.

Some may see this as a bug. I don't see it as such, since repeating text should set off spam filters. There just needs to be a way to let it be known that this is Ham and not Spam...