Have at thee!
It seems like Marvel Heroes just had an open beta weekend. Oh right, it was last weekend. Well there's another one coming up starting this Friday, and it's going to be the last open beta before the game's official release on June 4. You'll have from May 10 at 5:00PM PT, to May 13 at 10:00AM PT to check things out.
Who here's played Marvel Heroes? Was it fun, and worth investing into? I've been getting into Marvel comics big time lately, but I'm wary of giving my time away to a MMO.