Anybody who has a blog is familiar with the standard comment spam topics: viagra, weight loss, drugs etc. But recently I've been getting comments on a couple of my WordPress sites that consist entirely of URLs formed of random characters: I'm struggling to see the benefit of these to the spammer. For a start, none of those websites exist. For another thing, the anchor text is the same random characters, so even if the site did exist, the comment wouldn't push any search traffic to it unless the user searched for random characters? It seems like the bot is just generating totally random URLs. Does anybody know what these are about?