Apparently AOL is going to start restricting Advertising.com's ability to sell its premium inventory. It will be very interesting to see exactly what that will mean. I don't think it will mean certain placements will never see clients booked by adcom reps, but more likely that they will not be able to guarantee delivery on certain placements (but they may still show up in the mix). So likely they can't sell guaranteed delivery on a particular placement, but they can sell a performance campaign which ends up on that placement (just not declared beforehand).
Given the large number of variables there are in advertising purchase orders, I'm curious to see the exact definition of what Advertising.com reps can and can not contract for....and what the loopholes are that the crafty reps and their analysts will find.