Guys, I am sorry .. I'll send the addon right to everybody who hasn't received the addon yet. I don't know but I haven't received updates from this thread.
If you still misses it, just write me here .. sorry again.
This isn't possible with the addon.
It wasn't implemented because we thought it was sorta invasive - changing peoples avatars without them accepting. My best suggestion is to make users aware of the feature :)
Oh, I am sorry about the misleading redirect (I've recently taken down the site). It was basicly information saying that I will email you the addon.
The addon is not dead - and I'll fix the redirect.
Sorry, I'll send it asap.