The AdSense team just launched their very own blog.
You can look forward to posts around 2-3 times a week from an assortment of Googlers involved in the operation of AdSense – engineers, product managers, product marketing managers, and operations staff. We hope you’ll visit often.
This should be very interesting for anyone who runs a website and displays adsense ads
They just started a few days, with a few topics:
Welcome to Inside AdSense!
Fewer Ads, More Money?
Put your pages on the map
Expect some interesting tips from these nice guys:
A look inside Google AdSense