hyperkik - 3:54 am on Mar 24, 2006 (gmt 0)

From Google AdSense Help [tinyurl.com]

Please note that clicking on your own ads for any reason is prohibited, to avoid potential inflation of advertiser costs. All clicks must be generated as the result of a user clicking on the ads. We therefore require that Web pages do not include incentives of any kind for users to click on ads. This includes encouraging users to click on the ads or to visit the advertisers' sites as well as labeling the ads with text other than "sponsored links" or "advertisements."