The profile picture you're using at the moment looks (at least in mini-thumbnail form) like Andy Whitfield from the first season of Spartacus.

You're probably the most frequent Steam gamer I know. I'm working on the "Pillar of Community" badge, which has a bunch of menial "social" crap you have to do. This (posting on a friend's profile) is one of them. Another is posting a screenshot, which I've done. I also have to comment on a friend's screenshot, but none of my friends have any posted.

Any chance you can grab a shot (usually F12) next time you're in a game and post it so I can cross it off my list? Thanks!