Keeping up servers and bandwidth are not that much costy. And I do think that games publishers are paying for every game specific server.
For example Steam is free to use and making money on games sales.
They should spend a lot of money on developing new services like Home expansion. Still I believe it is profitable.
Play my LittleBigLove level: search keywords "LittleBigLove realil"
LJ (Russian): http://realill.livejournal.com







