Initially when google started its adsense program the program attracted high quality ads and as a visitor to various websites I would click on the ads because the advertiser would provide me with relevent information. In the past few month I have seen a degradation in the kind of ads that are shown on the same set of pages. Most of the ads lead to webpages which have no content and only hawk google ads (The MFA sites). Why does google not put in a policy where even the advertisers/advertiser webpage are verified and not just the publishers?