phranque - 5:49 am on Jun 8, 2013 (gmt 0)
i don't see where the shill bidding comes in.
it's pure and simple arbitrage.
mike2010 is bidding for traffic in one market and getting paid for the eyeballs and/or clicks in another market.
the only reason it's a problem is that google owns both of those markets and doesn't like to be embarrassed by having inefficiencies in its markets exposed by publishers.
it's probably in the terms of service somewhere.