you get bonus on GBYTE no matter what.
you only get blackbyte bonus on GBYTE if it is linked to a bitcoin address (which could be empty--you can do this in 2 seconds with a blockchain.info address, or on Electrum).
so 20% extra GBB + 40% extra blackbytes right?
isnt it much profitable to buy GBB with your BTC rather than link BTC or am i missing something? (assuming price of GBB/BTC remains same)
There is no reward for the blackbytes because they are private and it's not publicly known you own them.