YPN Eliminates Duplicates in Multi-Ad Pages
Yahoo Publishing Network announced today that they have started to display unique ads across multiple ad units on a single page. Previously, if there were multiple ads units on a single page the same ads would be duplicated in each ad unit. Now the ads will be unique.
It surprises me that it took Yahoo this long to make the change. It’s something AdSense has done for as long as I can remember, and something a lot of publishers noticed right away as a deficiency in the system