I've continued to tweak my Adsense and squeeze all I can out of one, single web site. The revenue is continuing to go up and I am pretty happy with the results thus far. It's not that rough once you get the basics down and then start implementing some of the less know stuff.
Thats great, congrats. How much did you earn last month and how much traffic does your sites receive in a month?
I received a check of $685 for the month before and my one site gets an average of 600-700 visits a day.
It's a web site (that I'm keeping, BTW! hehe). I've had it for about 2 yrs now, using Site Build It. I do have a high CTR and eCPM, but I can't share that information. Sorry.