It’s sad to have to spend time on this. Spambots are not only email pains but they are blog bothers too. Every day I get a number of comments sprayed at this blog. Luckily I have spam words alerted to them, but I still have to go through and clean them out. I will never play texas hold’em ever ever ever.
Besides turning on Spam words and tuning the list to catch the latest, there are a few tricks that I do not yet use but plan to.
This discussion is very helpful http://www.tamba2.org.uk/wordpress/spam/ as is http://wordpress.org/support/3/13443 as is AuthImage (thanks to Daryl L. L. Houston for pointing that one out).