IMO BlackCoin could be serious threat to DarkCoin. As a community we should take it seriously:
1. If BC implement DarkSend, DRK could be doomed
2. BC multipool is going to use X11 (this is already happening, it is just a matter of days)
3. I think that more "average Joe" kind of people will consider DarkCoin just a copy of BC because they will firstly hear about blackcoin, which is a big hype nowdays, and they have great marketing(Apple is big copy-cat, but people find it innovative ).
Where have they said they're planning to use DarkSend?
i think it cannot work with that coin, because it is now POS (started POW+POS)
the mining is done
their infrastructure is not comparable to DRK
so it would be very hard for the devs to implement DarkSend into BC with the random master-node-concept as a piece of the whole DRK-mining-infrastructure
The people at BC are making a false claim as well; they were not the 1st to go stake only. ADT did it 1st and man was it a mess... I'm not worried about BC even slightly.