Have you ever noticed that some search results show up with a smiling face included?
Like this one for Matt Cutts.
This is the Google Authorship markup at work. And it’s not just for Matt Cutts. If you contribute written content to an online publication, your smile can show up in search for your work, just like a Google Rock Star.
What’s even better is that it’s probably the easiest little bit of code you’ll ever add to a web page. Watch this video as Othar Hansson and Matt Cutts explain how to add rel=author to both single and multiple author publications.