Hints and Tips: Dealing With Spam
Four Rules of Thumb For Dealing With Spam
Dealing With Your Spam Problem
Dealing With SPAM: The Police Notebook
These are three articles. Google turns up many, many more.
These links sponsored by the "I'm Sick of Erection Set Spam" Coalition (namely, me, myself, and I). I moderate all comments to my Blogger blogs, and they come and go like the ebb and flow of the tide.