What ad networks are available to iPhone developers who want to distribute free regular apps (rather than web applets) supported by ads?
This story tells about a shitty application that is $ 200 / hour.
Here is one:
I am creating this Community Wiki so anyone can add to this list.
I saw the Tower Defense game (TapDefense), which forces the user to click on a link to a paid application to save the game. He uses AdMob as his advertising distributor.
The Deck prides itself on being a very "high quality" ad network. I saw them on several iPhone apps, but they are clearly picky about who they let their ads run for.