World of Warcraft Tops 5M Subscribers

jkdove writes "In a press release today, Blizzard announced that it 'has surpassed five million customers worldwide.' GamerGod had an opinion article on why exactly so many people are playing, back when the four Million player mark was reached." From that article: "Thus, if you want to produce the next smash hit MMORPG, is it enough to make the game easy to solo and to level? I don't think so, although I'm pretty certain that there will be some game developers trying this strategy. World of Warcraft has a secret weapon, which isn't that easy to clone..."