OKay, so many webmasters love to get those free sub domains and build sites on them.
Well guess what?
You may not be in google anymore!!!

That's right, if you use some free service like CO.CC, you may not be in google search anymore.....
That is right, Google has removed, deindexed, banned and penalized any site using a co.cc subdomain.

Read all about it here:
Google Delists All CO.CC Domains From Index