Dan Boone wrote:
1) You typically don't get any control over what is advertised. On Permies, this has translated into AdSense ads showing up for various "toxic gick" non-permie agricultural products, to everyone's consternation. If your website takes a position on any subject, you have to be aware that your network ads may very well end up advertising products or services on the "other side" of whatever controversy exists.
Dan Boone wrote:
3) Advertising networks tend to attract advertisers with dubious ethics, who want to sell magic pills and powders and products that are all sales pitch and no function. Because of #1 above, any website with too many network ads begins to look like those "back page of the magazine" advertising pages in the pulp mags and comic books of the mid-1900s. It can be hard to stay proud of your website and its content if it has got too many Amazing Sea Monkeys, Miracle X-Ray Spectacles, and Awesome Herbal Solutions For Male Potency all over the place.
Dan Boone wrote:... too many Amazing Sea Monkeys...
Barb Adams wrote:When using Adsense, realize that they change their secret methods for online content searching quite often. That can suddenly change how many appropriate visitors come to your site and the value of the ads placed on your page. You have to keep up with it. For example, it used to be that if people wanted to attract blueberry farmers to their websites, they could find a way to insert the words "blueberry farming" into their online blueberry article a hundred times so the article would be the first one found by Google when potential readers were searching for the information on blueberries they were providing. That's long been dismissed by Google and is considered "keyword stuffing." The search engine would tend to bypass a website with that type of content. That's just one of many examples.
Google targets ads to individuals based on factors like their geographic location, and their browsing and search patterns.