With a quick copy & paste I now have gravatar enabled on this blog. I’ll tweak the look & feel a bit later, but you can see it in action on this post.
Matt has also enabled gravatar on his blog and has posted his implementation here. You can see other examples, including code examples for other blog platforms, by reading the “implement” page on gravatar.com.
Don’t have a gravatar yet ? Signup — it’s free and takes 2 seconds.