Care to elaborate please? Why is it so definite ? I actually don't see any reason why blackbytes couldn't be available on an exchange, so if you have some info to help me understand the no, I would be grateful if you could share it. Thank you.

No news, no development resources, probably we can easily run market, but with manual deposit/withdrawal which means there could be delays like in escrow services, and quite high cost of such manual operation (about 50,000 blackbytes). Please email admin@cryptox.pl those who think that's good idea.