Blogger takes steps to combat spam

I've noticed that Blogger blogs have started being hit by peculiar spam messages about stock picks. They're peculiar because they have no links in them, and no URLs are mentioned, either. Instead, they consist of long screeds about how important it is to snap up shares of some stock that's poised to "REVOLUTIONIZE" some industry or other.

I'm sure the lack of links is due to the different anti-spam protocols, such as Spam Karma. These use the number of links in a comment as one way of filtering out possible spam.

Well, Blogger isn't ready to implement blacklists or spam filters yet, but they're taking a step in the right direction in at least stopping bots from spreading destruction, with their new word verification for comments.

I can't figure out what these peculiar spams are supposed to do, though. Do spammers really think they're effective? Don't they know that on the web, no one will ever read the comments because they're just too long!