I see many sites doing this. They put the ads at a page which contain a long article. Then they put the page on thier main page. When visitor visit thier page, the adsense showing ads that are not related with thier main page but with higher paid keyword ads. Is this againts the adsense's TOC?
As long as 100% of the article is on screen is ok. But is not ok to show a 728*90 ad in a 728*90 iframe (Especially when the iframe has scroolbar disabled).
nope.. it only the size of the adsense.. I can only the ads but not the article.. I see the article only when I scroll on top of the adsense using the scroller on the mouse ...