A big part of what’s driving that growth is the expansion of AdSense, Google’s mammoth contextual ad network. While
second quarter earnings pegged revenues on Google’s own sites higher than on AdSense sites ($1.43 billion versus $997 million), AdSense has the larger reach, according to Kim Malone, director of AdSense online sales and operations.
Having spent some time with the Yahoo Publisher Network team, I can tell you that they realize the huge potential of contextual networks too. They showed some very promising developments and plan for growing the YPN network. I’d reveal more, but I lost track of what was under NDA and what wasn’t, and, not being partial to waking up with a horses-head laying next to me, it’s best I err on the side of caution.