That's a bad news for me, I don't know whether google has penalized my site or not, but when I searched the domain name, my site disappeared from the first position in google SERPs, I know google is updating their panda algorithm, but I swear that I didn't do anything that doesn't match this new algorithm, anybody could tell what to do next.
Today Google Removed the Co.cc Domain from Their Index.If your website is on Co.cc Domain It will not be visible