before google has blocked free domain service co.cc but now Google started indexing .co.cc pages again.
why Google blocked .co.cc before?
Because .co.cc domains are doing demage their advertising and publisher Networks, .co.cc domains was very harmful for premium domains.
many peoples submite new dmains for illegal contents.
Why Google unblock .co.cc?
Because mostly peoples are poor they cant afford premium domains and many are not able to buy because they dont have credit card etc, and they hard works on .co.cc and posting good articles and giving good services so google dont want to waste their time and they started showing their .co.cc domains in search engine.