Well I took a look at it and everything should be fine, but I'm guessing that blog doesn't want it to be linked to or... Something. Try hosting the image on something like photobucket. I have my avatar on picassa.
And yes, uploading avatars hasn't worked for pretty much the whole time this forum has existed. I think it worked at first, but I'm not positive.
I'd like to hear my options, so I could weigh them, what do you say?
Five pounds? Six pounds? Seven pounds?