According to Slegg, the changes will cause some problems for publishers rotating ads from both AdSense and a competitive network, such as Yahoo Publisher Network. "If you are running YPN and AdSense on a 50/50 ad rotation using the same or very similar color palettes, you would now be in violation of AdSense policies. Likewise, if you are running AdSense on one part of your site, and YPN on another part, you would now also be in violation of the policies if you are using the same or similar color palettes," she writes. The rules also apply to ad units that mimic AdSense, yet are not contextual based, she adds.
Meet Your Favorite Search Engine Watch Contributors
Many of SEW's leading expert contributors will be at ClickZ Live, the new online and digital marketing event kicking off in New York (March 31-April 3). Hear from the likes of: Thom Craver, Josh Braaten, Lisa Barone, Simon Heseltine, Josh McCoy, Lisa Raehsler, Greg Jarboe, Dan Cristo, Joseph Kerschbaum, John Gagnon, Eric Enge and more!