I think the most important thing to keep in mind in discussion of increasing avatar sizes is the threshold of having readable text in the tar. I like the fact that on MR there are very few avatars that feature the user's name in an ugly font, simply because there isn't enough space to put really readable text in there.
Make them too big and you'll get butt ugly crap like this: (I had photoshop open...)
Make them too big and you'll get butt ugly crap like this: (I had photoshop open...)
