There is a funny thread at DigitalPoint Forums named All Gay Cruises which describes how a publisher is upset that Yahoo! Publisher Network ads find his fishing site to be related to an ad about "Atlantis All Gay Cruises". Anyway, he tried to block it, but it is important to note, it is not real time (almost real time, i think).
Forum discussion at DigitalPoint Forums.

Comments:
Max
12/13/2005 03:25 am
This is exactly the reason I quit YPN - I had 3 gay real estate ads out of five in my directory. I didn't feel like majority anymore :)