Just like WoW, with a net benefit in terms of latency. I don't want to hit the ladder button and get get a minimum of 400ms+ of latency (but I would like to be able to at least join a custom game with them).
"connectivity" with social networking sites
Given the SC2 playerbase, there are more people who have a facebook account than otherwise. I hate it personally, but generally speaking, it wasn't a stupid decision on their part.
All of which are coming in a future patch..
While I do wish they had an option to reset your account and generate a new name, I really only see this as a positive change. A massive cut down on trolling, and bans meaning something.
Not that it matters much, SC2 ladder is compromised already due to rampant maphacking.
Sure there are indeed maphacks already, but calling their usage rampant is a bit of a stretch. Blizzard has never instantly banned people for "hacking." It comes in waves, like you know, these banning sprees of 7,700, 350,000, and then 320,000.
Just to reiterate:
Activision has nothing to do with anything they've done recently, and anyone who says otherwise is blaming something they don't like on a company of convinence.