Well, that was fun while it lasted. I was getting AdSense Optimization Tips fairly regularly, on a monthly basis. But they stopped coming as of November 2007.
What happened? Did the spiders get lazy? Did the algorithm get lazy? Did Google stop caring about making more money through publishers?

Have yours continued to show up or when did they last stop appearing?
August 11th, 2008 at 8:15 am
Well, somebody fell asleep. Not that I followed their tips!
August 11th, 2008 at 9:23 am
Atta boy! You tell’em!