I'm new here. I had searched but couldn't find anything about placing Yahoo!'s (and the others similar in design - not that Chit.. something) together with those of Adsense. Is it OK? If there is already a thread here, please forgive me.
Oh no!!! You can't include contextal ads from more than one company on the same page. Yahoo, Google, and Chitika (contextal version) can't be on the same page.