What does that mean technically speaking ?
Currently masternodes "see" where their inputs and outputs are coming from/going to, which necessitates multiple rounds of anonymization for DarkSend to be reasonably secure. By knocking their lights out if you will anonymization will occur much faster with fewer rounds and is even more secure.
Masternodes going Dark.
Thanks - nice explanation !
Obvious next question - why were "their lights" ever on in the first place then if it's such a great idea for them not to be ?