Yes indeed, folks, I think the spammers have developed robots that target Movable Type. A comment showing up today left a referer in my logs. Check out this site. It appears to be some kind of index of Movable Type archive entry URLs. I think it would be hasty to assume that this site is run by spammers — I suppose it could have some other innocent function but got hijacked. Follow some of the links and see how many have spams in the comment section thanks to one “klaus”. If you understand Polish, could you translate the site text and point us to it? Thanks.
I don’t know that we can ever prevent these from getting posted without destroying the easy-to-use character of the tools. But we certainly can take steps to reduce the return on investment for spammers. A good start would be to make it a one-click operation to a) delete the comment, b) add the commenter ip to a spammer tracking authority and c) for tools that require it, rebuild the entry page.
Another possibility is that we’re seeing beginning of the end of the comments section. I hope not.
Update It looks like the page I pointed to above has been pulled. They’re probably spammers I didn’t bother to copy the page, and it’s not in web.archive.org, so I guess you’ll just have to trust me on this.
Update 2 This post is getting lots of traffic from Scripting. Do a feedster search on comment spam to get more background info.
Update 3 It looks like someone has written a plugin of some sort. I haven’t looked at it yet.