While these aren't exactly concrete subscriber numbers, it's definitely secured it's spot as the 4th most popular MMORPG in the world.
#1, Ragnarok Online (~17 million)
#2, Lineage (~2.2 million)
#3, Lineage II (~2.1 million)
Next up after that is Final Fantasy XI with around 600k subscribers, so even if some of WoW's userbase doesn't stick around long, it's not going to drop off to 5th anytime soon.As of January, it had a little over 300k users.
Square Enix is also handling the game in Japan, via it's PlayOnline service, and it'll be entering beta testing soon. It will be interesting to see how well it does there.Was this even necessary? I mean, really.