As previously mentioned, I'm currently exploring advertiser - agency relationships.  It's an extension of my work into reinventing the marketing organization as one of the four keys to becoming more customer-centric:

1. Redesign P&Ls and
   metrics;
2. Shift culture away from marketing communications;
3. Invest in a customer relationship infrastructure; and
4. Rethink
   agency relationships.

We are conducting this research in conjunction with the AMA's Mplanet (29 Nov - 1 Dec) and results will be released at the event.  If you'd like to participate and get a full copy of the completed research, here's the survey link:  http://www.gmi-mr.com/survey/s.phtml?sn=58793.

Also - please feel free to pass this link on to anyone you'd think is relevant and interested in this topic.