  On the basis of the XSS (Cross Site Scripting) and Web Crawler techniques it
is possible to go through the barriers of the Google Adsense advertising system
by obtaining the validated links of the ads published on a website. Such method
involves obtaining the source code built for the Google java applet for
publishing and handling ads and for the final link retrieval. Once the links of
the ads have been obtained, you can use the user sessions visiting other
websites to load such links, in the background, by a simple re-direction,
through a hidden iframe, so that the IP addresses clicking are different in
each case.
