I use it every now and then, mostly just to hang out and chat in private spaces, and show off whatever rewards I've unlocked from games, or occasionally to play some minigames and collect free virtual swag.
Honestly, it's a novel idea. but it still needs work before it's practical enough to use regularly.
Maybe I should fire it up again. But with my since I havent beat many games on my new system besides Just Cause 2 and AC2, i wont have many rewards there or anything.