Google seem to be inserting people's profile pictures into search results. So when people look up something and something you have posted is in the results they'll feature your ugly mug. Here's an article explaining it:
I'll be trying to get this to work for my blog this week, honest. I'll let you know how I do. If you have a go please let me know how you get on.
Edit: Information from Google about this here: http://www.google.com/support/webmasters/bin/answer.py?answer=1408986&&hl=en
*I sort of hope some one has been taking my writing advice seriously and following it. I'd like to see the outcome.