Remember, if you do the math to divide it out, for every 175,000 mintcoins you own = equivalent of minting 1 Mintcoin per hour, 24 hours a day at 5% rate. Right now the rate is 10% though so it's double. It is like mining, but it's energy efficient minting your investment doesn't break or run out of mining ability. The minting ability keeps going as long as you keep minting.
