Well I gotta new client who decided to publish 2.5 trillion pages of pure garbage and his site got hit by Panda. He's got about 100 pages of decent content. Probably 30% of the garbage is indexed. It's been a couple weeks since I've removed the trash content, but it's all still indexed. This weekend's index update shows a few pages deindexed, most of the trash is still indexed. How do I deindex 2.4999 trillion pages and get Google to keep only the 100? I've thought of moving the domain, then moving it back but I think this might get it penalized. The remove url feature on GWT is impossible, it can't be automated. robots.txt is impossible, the URLs don't have a common prefix that I could block, they're all rootdomain/yaddayadda. What would you do? Any ideas truly appreciated.