Akismet
So the Akismet plugin has been included with WordPress builds for quite a while now, I never had it enabled because you need an API key which required a WordPress.com account. But finally due to the annoyance of having to delete comment spam every few weeks, I caved and got a key. And so far so good, it’s managed to trap all the spam comments. What’s cool about this is that they auto delete after 15 days, so if I don’t check I don’t have to worry about a list in the 100’s long. Of course the downfall is if I do get a real comment which happens to get caught I need to flag it for de-spamming in time.