main game and one or two flings on the side, or the game-hopping manifesto that compels us to try anything and everything that comes down the pipe, everyone has his own method for enjoying his favorite genre.
The only problem is that of time. Personally I don't have enough of it, as I could retire tomorrow and still never get to try all the games that interest me. Currently, it's all I can do to manage two "main" games and sample several others on a weekly and sometimes monthly basis.
What about you, Massively readers? How many MMOs can you realistically play at once?