One huge problem with all CPU coins and that is bots. What about viruses, etc. infecting computers and having them serve as miners for DRK, MRO and other CPU coins?
Not 100% bad as it does strengthen the network but it can lead to problems later on. I could hear the department of homeland security now. But then again, any
anonymising technology (e.g. darkwallet), will probably cause similar reactions.
IAS
Bitcoin was a cpu coin for half its life. So...
DRK is cpu/gpu. Bytecoin and clones (MRO included) are cpu only right now and thus affected more.