I've played many MMOs in my day, all free to play. GW was in fact my first commercial MMO and I really enjoyed it, although I consider GW to be a RPG with some MMO elements that must be played online.

I was already expecting this to happen. The game was announced in 2007 and since then Arenanet hasn't mentioned GW2 more than a few times. Basically, only a few short posts to keep us believing it was under development. They want to push the release date to 2010 or 2011 because GW is still selling nicely.

Apr 2005 - GW realeased
Fev 2008 - 5 million units sold / 1.6 million year
Arenanet operating cost - 9 million dollars year

If each game sells for $19 (Europe it's €19 = $24) then they are making an average of 30 million dollars in sales.

You guys do the math...