http://www.vanityfair.com/online/politics/2009/10/can-newfangled-web-ads-save-journalism.html
Push-down ads, or ads that suddenly expand and push the content you are viewing down the page, are offered in this article as the latest technique used by advertisers to glean money from the Web. Five other common techniques are listed, including those that magnify when your cursor scrolls over them, and interstitial ads that appear automatically as a sort of toll before you get to the content you are trying to view.
One needn’t surf the Web long to encounter several of these techniques. I have come across each of the six types mentioned in the article, and while some are more annoying than others, I always remember that they are a necessary nuisance.
One phrase mentioned in the story is “banner blindness,” or the tendency by Web users to ignore “unobtrusive” ads located along the edges of the viewing window. The concept is presented as a problem perceived by some marketers. I don’t see the difference between this and the ad pages in magazines and newspapers. I understand that Internet users may train themselves to ignore the ever-present advertising banners, but I’m not sure that print readers can’t do the same thing.
As more content is more exclusively available and sought after on the Web rather than other mediums, advertisers will have to accept the importance of Internet advertising as much as they now do that of TV and print. While different techniques should be experimented with, it will probably just take some time.