Onsite Advertiser Sign-up is an extension of Google site targeting that makes it easier for advertisers to bid on your site. For simplicity, Onsite Advertiser Sign-up is a program to promote your site to Advertiser through AdWords, making more advertiser to sell ads in your site.
When you use Onsite Advertiser Sign-up, your ad units will display an "Advertise on this site" link that takes advertisers to an informational landing page with details about your site and the Google AdWords advertising program. Advertisers who sign up through this page will be guided to create an ad targeted specifically to your site, and only your site. When more advertisers create and target ads to your site, you'll benefit from the competition as it drives your potential earnings up.
Google Spider - Googlebots
