Wargaming.net is going through quite a growth spurt, and the company's CEO says it's not just about registered user numbers boosted by freeloading players. "We probably have one of the highest payment ratios in the industry, it's around 25 to 30 percent," Victor Kislyi recently told GamesIndustry.biz.Kislyi also offered up some impressive concurrent user numbers for World of Tanks, including 423,000 simultaneous Russian tankers that he said outstrips the entirety of EVE Online's playerbase.As for the "pay-to-win" rhetoric often found in World of Tanks internet discussions, Kislyi says it is what it is. "For casual gameplay, which most players do most of the time, people don't usually use gold or expendables. Of course if you want to win a tournament, if you're competitive, if you play clan wars, if you want to be at the top, we think it's appropriate to expect a little bit of money from you because you already spent hundreds of hours in our game and that's much more than the value of any $50 box."http://massively.joystiq.com/2012/03/19/world-of-tanks-has-20-million-registered-users-making-double-di/