Which Witch Is Which? Salem Explained(ish)

One game that I'm going to make time for over the holidays is Salem, Paradox's sandboxy colonial MMO. I saw it in action at the start of the year and knew that it was going to be a time-hungry slow-burner, and that the sort of open-ended stuff, like universal PvP, and serious consequences for such transgressions, was going to make it an interesting sort of commitment to play. All that stuff is the precisely the reason most people will be put off playing it, I'm sure, but for those folk who understand the appeal of building into a world, this could be gold. Or perhaps it will just a tedious grind. From the highlights of a recent live-steam (which you can see below) I am expecting moments of the former.