Not to jump in out of turn here, but it seemed like your statements about complaining without contributing might have been a bit in rebuttal to my comment earlier. I think you are spot on here on these large issues; however, I do feel there is a distinct difference here in that we are talking about an entertainment business. They offer a service for free, we take part in said service, and we really don't have a lot of ground to demand more when they change what they offer.
That being said, to expand on my earlier statements, I think there is a difference between general complaining because we are bummed something is happening and complaining with some sense that blizzard owes us. I think we have a right to voice if we are unhappy about the changes, but we don't have much ground to demand much from blizz since we aren't necessarily paying customers. Though some of us are.