I just checked my adsense account today and they had revised some of the terms and conditions. Yea, yea this happens occassionally but one major change that I observed wa that they had added a Referral option. They actually pay you for bringing people into Adsense and some other Google services! Take a look at this What's New Page. What do you guys say? Isn't Adsense great or what! I'm lovin it.