Does somebody stil mine on middlecoin?
~1000Mh, decades of BTC balance is not a dust ))
Probably very lazy and ignorant rig owners and lots and lots of bots that can't be updated by the botnets with new pool details.
Lazy and ignorant bots and hobby miners who aren't paying much attention. Although, if you're stuck on script the return from the pools is a choice between poor and not-good anyway.
Funny thing though is that Middlecoin was number one on poolpicker.eu yesterday and the hash rate doubled. Miners are funny people.