Mixing Adsene with other Ads
If host's website contains advertisement that resembles Adsense, this will be considered as violation of Adsense policy. So it must be taken care of that advertisement other than Adsense is contextually and in their appearance different.
Hacking/Cracking
There should be no hacking, cracking material on the host site. Neither software nor text of such nature is allowed.
Code modification
Any code provided by Adsense must be used without any modification. It includes changing the behavior, appearance, targeting of the advertisements.
Adsense in pop-ups & e-mails
It is not allowed to display Adsense advertisement in a pop-up or e-mail.
The two policies mentioned below are for the business that has is advertisement hosted on a website.
Google – The first point of contact
All communications must take place with Google. Incase you have any concern about your advertisement hosted on a website or the website itself, the first point of contact should be Google and not the host.
Google using your name/logo
Google Adsense reserves the right to use the name of businesses participating in Adsense program in reports, presentations, etc
You may stop displaying the advertisements or end the contract with Google Adsense for any reason with a 10 days notice.
Please remember that Google often make amendments in some of their policies so keep yourself updated with new changes from Google Adsense.
Google Adsense is a smashing opportunity for businesses to advertise their products and services on several websites by paying only for clicks by consumers on their advertisements. This is an opportunity for the host also for making good money as well as for increasing number of visitors to his website.
Knowing the policies of Google Adsense will help you determine whether this program is right for you or not. Observing their policies will result in a smooth and uninterrupted advertising business.