We cannot afford ads in big magazines or on popular websites, they cost tens of thousands of dollars. We do advertise using Google, and get a fair share of return on that. Also we contact every possible gaming/baseball website & magazine and ask for the game to be reviewed, but we get ignored 80% of the time
Luckily, this year Baseball Prospectus will review us and maybe ESPN will run a piece about us too. Let's see how it works out...