I was wondering if they can be ranked and be done for SEO purposes. Well I put in Google site:co.cc and there was lot of co.cc domains and I have seoquake for me to look at the competition of the pages. Well I took the first website that was listed and it got a page rank of a 1 and had well over 1000 backlink's. So if you guys don't have money for a domain you can get one at co.cc ( non referral link ). But for SEO purpose I know a lot of warriors would say go with a .com domain or even a .info domain if your on a budget. I would recommend a .com, but I dont have the money to buy at the moment. I just wanted to give y'all a heads up that a co.cc domain can be done with SEO.