Where to place you Adsense

Did you know that Google actually tells you the best spots to place your adsense to get the best return.
You should consider the following things according to Google.

• What is the user trying to accomplish by visiting my site?
• What do they do when viewing a particular page?
• Where is their attention likely to be focused?
• How can I integrate ads into this area without getting in the users' way?
• How can I keep the page looking clean, uncluttered and inviting?

Here are some tips for a forum:
http://adsense.blogspot.com/2005/10/six-adsense-optimization-tips-for.html

Here are some tips for a website:
https://www.google.com/support/adsense/bin/static.py?page=tips.html

Ofcourse if you want to know all the Adsense Secrets you should really check out Joel Comm's ebook "What Google never told you about making money with Adsense"