[kobescoresagain]

I believe the main thing that google is anal about is that you have content on each page. The content then must not be against the TOS (I think there are certain types like adult content that are) So you don't want it on pages that automatically redirect, sign on and sign off pages. These places really wouldn't help you either. A seperate suggestion, if you haven't started adding ads onto your site yet, I would suggest instead of putting your adsense code in the templates that you put it in a program like phpads and put the code from it into your templates, so if you want to change ads later away from adsense to either custom ones or maybe yahoo publisher ads you can with ease.