Very nice little modification.
The only problem is that there doesn't seem to be a "default" image for guests, so all I see is a little red "x". Also, because guests have no posts, we get a chunk of blank statistics.
Is that how it's supposed to be?
Otherwise, well done. I like it.
Theres still no avatar for guests. Its a broken image.
Ahh I forgot... Mozilla doesn't show broken images evidently. =/
There, I tried to fix, I dunno if it worked though...
well.. I dont see it on that link.. just an error message...
Looks good... soon to be on my site