as far as i know the gta v hacker is still mining and dumping about a 1000-1500 or more coins a day.
also, i think people with lots of masternodes are dumping their rewards as they already have a ton of DASH.
asic's should eventually help stop the first problem but that's a ways off.
Does it make any difference whether it's bot-hackers, masternodes or regular miners ? Isn't the daily coin emission the same whatever ?