I have been creating a decent amount of Adsense sites with keyword domains. Each site has entirely unique information and 3-5 pages. All of the designs are unique, from different free CSS templates. These sites do very well for the first month on Adsense, maybe 6 weeks and then immediately drop off Google rankings. I've spread them around on 6 separate ips/class c's. The sites remain in Google and offering Adsense, just the organic Google SERPS drops off a cliff. Adsense still pays the same eCPM. Anyone have a similar experience that made some tweaks? I did have moderate success with placing the exact same content on a different template, but not really anything significant.