Whereas I dunno what sort of MMO is it, the name makes me instinctly think of those witchhunt/mafia/whatever forum games.
You could follow that link I posted and look at some screenshots other players took. It is definitely not a facebook game. One of the developers sigged a something I think sums up the game pretty nicely.
"This isn't farmville with fighting, It's Mortal Kombat with corn."
God, this is old and not a great trailer. Still though...
If you've ever played legacy haven and hearth, then you know what's what. For those not in the know salem was once being developed by seatribe, the makers of haven and hearth, for paradox. Paradox ditched the product because they weren't making any money on it. Shortly after that, seatribe also abandoned it and sold it lock, stock, and barrel to Mortal Moments. I have the strangest feeling I've typed this on this forum before :/