Came across this nice article on avoiding registration on free websites, thereby reducing SPAM. You can do this using BugMeNot. Read the full article.
Update: This tutorial is now superceded by A Comprehensive Guide to Protecting Your Blog from Spam.
Comment spam is something every blogger is really really afraid of. Over the past two years that I have been using WordPress this is one problem that I have faced on and off.
I realized that the amount of spam I was receiving was is direct relation to my popularity. (and I wasn’t that know then)
After a lot of experimenting, I have finalized settled down on the following. I’m pretty much spam free for now.