If you go to the what's new panel, you should see a notification saying I've just changed my avatar - the only downside is that because I uploaded my avatar twice (after uploading the wrong one), it shows the notification twice. It's something I'm working on fixing, since a lot of people often upload their avatar multiple times to make it look right.
The Portal av was a favourite of mine too, but I've started to see it pop up in a few other places.

Perhaps I'll keep it until something better comes along.