I was curious as to what Acxiom's cookies actually look like after opting out. With a fresh Chrome Igcognito session, following through the opt out process, I get 20 cookies. Plenty of unique GUIDs perfectly capable of tracking me through the internet, and no occurances of "DO NOT TRACK" or "IGNORE". Screenshot here:

http://img443.imageshack.us/img443/950/d2ys.png

Also, can you define DMP? I did do some googling first, and I'm not sure which acronym you're referring to.

EDIT: Found it. DMP stands for Data Management Platform. For anyone else: http://www.adopsinsider.com/online-ad-measurement-tracking/d...