is it allowed to write something like "cool free tools" or "try these free google programms" to promote firefox, picaasa or the google-pack for example or are you not allowed to tell people to click the google-products like you are not allowed to tell them to click the content-ads???? hmm
Have you ever tried to go through G policies? Please have a look https://www.google.com/adsense/support/bin/answer.py?answer=45461&topic=1449
Google has changed their stance on referrals. See my post here: http://forums.digitalpoint.com/showthread.php?t=203009
FireStorM; did you read Google's update here?: https://www.google.com/adsense/support/bin/answer.py?answer=43870&topic=8972