AOL has launched AIM Money less than a year back. If you are a developer, wish to develop some gadgets using AOL sdk then you can register for their AIM Money program and earn some revenues. All you need to do is develop gadgets and let AOL show their advertisements. Greater the number of downloads of your gadget, larger are the chances that you will earn a lot of money.
As of now, they haven't published any details of Top earners... also developers haven't come forward putting forward their experiences so it appears to take sometime to gain full momentum. Though I doesn't seem to be in a full swing as of now, I think it is right time to give it a try. Competing when there are huge number of gadgets is tougher than making it before others enter in the field.