Why does Blackcoin still keep going up in price but Mintcoin stays the same...

Some suspect it's manipulation by the developers or whales. If you want to make quick money, play BC
multipool es big, 3500mh/s scrypt and 14Th/s sha-256
price por 1mh/s 0,005 btc
3500*0,005= 17,5 btc per day only scrypt
mintpool.us has been failure, they have stolen donations from our community!!!!