Google AdSense Program Policies

Everytime I create a new blog or change my template I keep on asking my self trying to remember what is the :

• Actual Number of Ads allowed limited by Google?
• Number of Ads limit on Adsense?

Interestingly most websites show contradicting guidelines. Probably due to checking on Google's guideline on different times - policy changes?

As of today, 30 January 2009, here is what I got from their website
Google AdSense Program Policies
....
Ad Placement

AdSense offers a number of ad formats and advertising products. Publishers are encouraged to experiment with a variety of placements, provided the following policies are respected:

• Up to three ad units may be displayed on each page.
• A maximum of two Google AdSense for search boxes may be placed on a page.
• Up to three link units may also be placed on each page.
• Up to three referral units may be displayed on a page, in addition to the ad units, search boxes, and link units specified above.
• AdSense for search results pages may show only a single ad link unit in addition to the ads Google serves with the search results. No other ads may be displayed on your search results page.
• No Google ad or Google search box may be displayed in a pop-up, pop-under, or in an email.
• Elements on a page must not obscure any portion of the ads.
• No Google ad may be placed on any non-content-based pages.
• No Google ad may be placed on pages published specifically for the purpose of showing ads, whether or not the page content is relevant.

I'd encourage you to check it out yourself as this policy could change.

The link I just checked from was
https://www.google.com/adsense/support/bin/answer.py?answer=48182&cbid=-10y8d8bkvaj2i&src=cb&lev=answer

Which is under
Google Help › AdSense Help › AdSense basics › Program policies › Google AdSense Program Policies