Is comment spam on the rise?

On one of my blogs I’ve had a massive rise in comment spam that has got around my Akismet plugin in WordPress. They aren’t published, as I manually moderate all comments, but it is still a pain. Now my other blogs (on a different host) are fine, so it could be they’re stopping the spammers before they get to my blog. The other possibility is that this problem site has webstats installed in the same directory, and I was reading recently that this is a big lure for spammers (the hits get listed in publicly available webstats without being approved in the blog itself, and it helps their sites visibility).

So I have a couple of solutions available to me. I’m going to do this over a few days out of interest, so the first thing I’m going to do is remove the webstats package (I use analytics now anyway). Leave it a couple of days, see if it dies down. If it doesn’t, there are a couple of WordPress plugins that bounce spam traffic, so I’ll try one of those.

Has anyone else noticed this rise in comment spam?