The Internet is the world's most popular destination for those seeking information.
However, Google Adsense and search marketing programs of other companies seem to have a negative impact on all unwanted web content.

When first introduced the Adsense program, it would be an innovative "extension" for the Adwords program. AdWords advertisers are placing unprecedented white laser penetration and reach.

Unfortunately, the opportunity to make money with websites through Adsense has led to the proliferation of websites created solely to persuade money through the program, without any worthwhile content.
In addition to this are duplicate sites, and sites with duplicate content - "Adsense ready web bought in bulk, sites with the same" Private Label Rights "content distributed by Adsense Clubs, and sites created just because free to all articles to article directories. And now we have sites powered by RSS feeds only.

With the increasing use of "intelligent" techniques to capture search engine rankings for search keywords, the quality and usefulness of search results also have a beating.

Hopefully Google and other search engines will change the way they rank and display Web pages, by improving their crawlers to disqualify duplicate sites, duplicate content sites, sites with an unnatural density of keywords in your content.

That is the only way to restore the Internet what it is - a great source of information about anything, available worldwide, to anyone with access to an Internet connection.
Will also be the only way that search engines are still relevant, and this will continue in business.