Meh, when a game is awesome, I'm the first guy to get really positive and passionate about it and play it obsessively for a long time.
But we've all been disappointed by stuff. As for myself, I play a lot of different games, spend a lot of time gaming, and I have been disappointed quite a few times in recent years, with stuff like Spore and Assassin's creed immediately coming to mind, but far from being the only examples...
So over-hyping gets an increasingly stern and cynical treatment from me. Besides, they don't need my fanboyism or anything. They are a business, I give them money, that's all the thanks and praise they need from me. If they continue though, they won't even be getting the money anymore. I don't buy certain unrelated products on the basis of them lying to me. Like certain foods with zillions of health claims of them. Shove them.