[calebhicks]

You should look at selling your own adspace using tools like OIOPublisher or OpenX OnRamp.

I'm not sure the amount of traffic that you have, but OpenX has served me greatly on a similar project.

It's important to note the market your app attracts. If it's highly sought after and lucrative, you may be able to find a small advertising network focused on your niche. Something to think about.

[rpweber]

Thanks! Hadn't heard of those but will look into it. Appreciate the suggestions.