Any generator sites like this are scams, they'll just make money from you with ads on their sites so the more you refer the better for them as its more unique IP's for them and they will make more money from you.
Another one is where they will offer you a can out "wow" you think, yep if you send them x amount of BTC they say they will unlock withdrawals... its all lies you will just loose your hard earned BTC.
Don't fall victim to scammers and their nasty techniques...if it seems to good to be true then it usually is