There are several reasons why advertising on Google corporation has more money than Yahoo! or Microsoft. First, the ads are shown in all the user's search query. Secondly, the technologies used by Google, are more effective, since shown more often coincides with the context of the page. And third, Google is cooperating with more advertisers than Yahoo! or Microsoft. Much more.
Until now, the number of advertisers who partner with the corporation, remained a secret. Representatives of Google just reported that employs hundreds of thousands of advertisers. It turns out this is really true information. At present, exactly known number of advertisers in Google: in 2003 their number reached 89 thousand in 2004 - 201 thousand, 2005 and 2006 - 360 thousand, 2007 - already 1 million.
The exact number of advertisers who partner with Google in 2008 is unknown, but it is understandable that the figure has long exceeded 1 million. Ben Schachter, an analyst of UBS, suggests that Google is now the corporation is working with a half million advertisers.
Such a number of people attracted by an advertising platform Google is due to its simplicity and ease of use throughout the system - so far Yahoo!, Microsoft and other companies are lagging behind the leader.