Yahoo's ad in adsense

I am still wondering why this is like this.

DP has google ads.

And on one of the threads I suddenly noticed this.

 

It's called image ads. Google adsense has them as well as text ads.

 

I know it is image ads. The point was that why yahoo is using google ads to promote itself.

Don't they have YPN

 

?????? i don't understand too

 

yahoo uses adsense because it's a great platform

google uses YPN, they're just like any other business...

 

that doesnt look like a google adsense ad. even image ads, they normally have "ads by google" at the bottom... i could be wrong though

but my thought is DP is rotating google ads with other ad network too...so that ad that you see may be from other network, such as valueclick...

 

I checked it - it's definitely a google ad > for Yahoo.

 

May be yahoo thinks google gives better results than YPN

 

More exposure to get their name out & more business for themselves

 

of course they will do all kind of advertising to promote their services. and adsense is a good tools. of course they use they own YPN as well but they will just spent money fron YPN on adwords XD

 

I wonder how much Yahoo pays Google...