My new neighbor has been playing this in Beta for a while. Mists of Pandera also. A few of his college friends work for Blizzard and are involved in all of the "new" games. One's on WoW dev, another Diablo and a 3rd working on Titan. It's pretty neat. His WoW account is free for 25 years or something equally crazy.
They also get him digital copies of every blizzard game out there for only $10. Not a bad deal.
I used to know a guy who played Diablo II as hard as I played Everquest and for about as long. I could never understand how he could spend that much time playing a game with so little content. He would talk about it for hours, which kind of gave me a feeling of how people at work must have felt listening to my friends and I talking about EQ. I never went on and on about EQ to people that didn't play though.
I haven't played it (and not sure that I will), but it's not an MMORPG. It's online to prevent character hacking, the way Diablo 2 had. It's like playing D2 on battle.net, except games can only have a max of 4 players instead of 8.
Definitely not an MMORPG. It's a dungeon crawling type game and has multi-player but it's not a persistent world. It only has a few hours of content that you do over and over in hopes of collecting insanely rare drops.
This game is good for mindless entertainment and apparently finally starts getting difficult in the inferno and hell difficulties. The real money auction house is added in today's patch which should be very interesting.
Then I don't know how someone hacked your account since it's literally impossible, unless you got hit by a man-in-the-middle attack from some virus/keylogger