There are so many sites out there right now that let you play the game for free. Your best bet is to make money by placing banner ads on your site and charging for them. Also ezone.com charges for you to download a game. Honestly to many free games out there and alot of good content sites such as stanlee.net, mondomedia.com, fandomfilms.com, shockwave.com, you get the picture.

Get your game out. More money for custom built projects for clients