Matt Cutts is Google's Genghis Khan of Spam. He probably slaughters more search engine spam sites in one week than Genghis Khan, Alexander the Great and Napoleon combined killed people in their conquest of the known world.
While we don't have any proof that's true (Google doesn't release spam stats), we can all agree that Matt Cutts is the world's most famous spam killer with more kills to his name than any other search engine spam cop.
Matt's pictured here in a Halloween pic from his blog in full frontal punk rock mode.
So if you want a great introduction to "What Google Knows About Spam" then spend 10 minutes watching Matt's Web 2.0 keynote video.
It will be the best 10 minute investment you make all week.
Don't forget to leave a "thank you" for Matt here or on Matt's blog. Either way, he'll see your comment and respond if he has time.