I've implemented Gravatars on my comments: http://www.mediahug.com/almax/2006/08/15/new-post-writing-tool-that-works-with-mediahugcom/#comments Problem is that they take up their own line. I want them to appear to the right of the text in a comment.
I see that you're already floating the gravatars to the right but the markup beneath the img is preventing the text from appearing as you want. I would recommend hacking the source code so that the gravatar image appears within the div with a class of "entry" right before the text.