Dear Mr. Semel;
Would you please visit the Yahoo Publisher department and have a conversation with your software engineer(s)?
Yahoo is losing at least a BILLION dollars a year in revenue due to poor ad targeting on your Publisher product.
Here's a summary of the problem: (Key: "<>" means "does not equal" in geek speak)
1) ford trucks <> teeth whitening
2) mortgage loan <> plastic surgery
3) real estate <> cosmetic dentistry
I understand that it's difficult to run such a large company, but Google is bringing in over a BILLION DOLLARS A QUARTER with it's Adsense program, which is very well targeted.
I read in a magazine last month that you have a "Real Rocket Scientist" on staff that "knows more about us from our search patterns than than we know about ourselves". His name is Dr. Usama Fayyad. Maybe he could help out?
Yahoo Publisher was much better targeted in January 2007, right before Panama was rolled out. It appears that changes in the Panama system may have something to do with the problems we are all experiencing in Publisher. Just a little hint to get you started looking for the problem.
P.S. (disclosure) - I'm a Yahoo shareholder as well as an advertiser and publisher.