Hello! On yahoo (http://search.yahoo.com/search?p=adsense&fr=yfp-t-501&toggle=1&cop=mss&ei=UTF-8) i saw peoaple that advertiese google adsense pages (like this one: http://www.couponmountain.com/Adsense.html)... is this against Google AdSense TOS?
If you're talking about bringing attention to those ads, then yes it is ok because they are referral products.