I have a hashflare account. It is hard to say if it is profitable, they take about 60%. I only have 0.12 Tarahash, which gives me about 4500 sats daily. I guess it could be profitable if the price of bitcoin rises. However, I have made WAY more money simply buying coins like digibyte, dogecoin and reddcoins and not selling them, i.e. hodl. ;)