Electronic Arts saw crazy profits in South Korea over the past two years from distributing its FIFA soccer title online for free, then charging an average of $1.60 per transaction for character clothing and accessories. Now EA has announced it will release a free online version of Battlefield Heroes in the U.S. and Europe this summer. If it proves successful, more titles will follow. Unfortunately, in addition to micro-transactions EA will also include in-game advertising to support the business model. Suddenly we’re picturing a surreal NASCAR battlefield… hey, that sounds like a new game idea! Pay up, EA!