As I wrote a while ago, I’ve been experimenting with the Calais Auto Tagger plugin which interfaces WordPress with OpenCalais. After writing a post, you push a button and it looks at the text and comes up with some tags. After running it over my entire site, I ended up with over 5,000 tags. Eat that, LiveJournal. However, there’s quite a lot of crap in there, and I’m going to need to do some cleanup.