My first game now has working ads in it, courtesy of Google's AdMob service. Now my only game as of today with 500+ downloads will be at least microscopically profitable. It looks pretty good. Putting it into Xcode through Cocos2d was a bit of a pain but it turned out well in the end and only took a couple days. From now on, all this stuff will be handled by Unity and the AdMob plugins I got from Plato Evolved.