On what should I look for or what needs a Coin that I have can be pretty sure that it is not a Scam?
Coin must have technologically provided advantages comparing to fiat money and have more of these advantages comparing to already existing coins. Or, another way, it could be as good as already existing coins, but provide far more better distribution.
It's a scam. Retarded, not even released, cloud storage, forced to pay for with 'xcloudcoins', for which you are already payed during 'ico'. Don't be idiots people. Use free skydrive / drop-box accounts, or pay for some 'advanced' file storage with bitcoins.