As you can see my avatar is showing my icon full size and then again smaller in the bottom right corner. Anyone know why?
Only you see two "sizes" of your avatar. Other users see only one. Big avatar (1) is showing who started the thread, small one (2) indicates threads in which you posted. I see my thread like this: and I see your thread like this:
If it's what I think you are talking about, the smaller icon bottom right of your avatar means you have posted in that thread. You will see it imposed on your avatar as you happened to be the thread starter too