I would break down and buy ad space, and just put an ad or two in your app. But, from experience, DO NOT USE MOBCLIX!!!!! [rant] When I first signed up, they would send you you're money every quarter (regardless of balance, which is why I decided to use them). Then, WITHOUT NOTICE they changed it so you had to have over $100 before they payed you. It took me nearly 6 weeks to fight it, telling them that I never accepted the new terms, but even then, they only gave me what I earned from when I started using them to when they changed the rules, so I only got about $10 instead of the $30. [/rant]