Ok – I just uploaded a new theme and I noticed my comments now post pictures beside your comments – which I thought was a cool feature. Then I noticed there were pictures on a few of the comments that are much older than the new theme… How’d my new theme know what picture to put on old comments? Gravatars…
I never knew they existed. I knew about avatars. An Avatar is a picture you associate with your comments on a forum or bulletin board like TalkCloth.com. But a GRAvatar is a Globally Recognized Avatar – geeky but cool. So, my new theme plugs into the Gravatar system to match your gravatar with your comments using your email address – which is how it was able to put pictures up on old comments. Awesome!
If you don’t have one — get one – they are free…http://en.gravatar.com/