Closing or not, there are overly emotional MMO players who regularly and violently exhort on message boards regardless of what's happening in game. You're lucky if it's even coherent.
For example, for years AC1's missile weapon system left arrows/quarrels stuck in the environment when your shot missed entirely. They eventually removed this to cut down on lag (hardly anyone picked up their missed arrows) and one player became extremely angry, ranting for over half a page, mostly in swear words, about how horrible Turbine was. In this game of magic, instant teleportation, life after death and bizarre creatures, his argument against this change was that it wasn't... "historically accurate."
Other MMOs have closed over the years, but this may be the largest and most well known to do so. Though this closure isn't surprising, it just seems strange to me that it happens right after they released an expansion for the game... nice long term thinking there.