So, yeah. Dean got the Mark of Cain.
I don't know full details--I didn't watch it, only read summaries and comments. But yes. Dean has the Mark of Cain.
That's what we gave Sam, Dean, Bobby, and Cas in "Writing on the Wall". It was a brand, and hid them from their enemies at the cost of stripping them of their home. They had to wander.
I know it's not the same deal as what happened in Show--but the fact remains that they gave Dean the Mark of Cain.
So. Could be two things.
1) Hyde and I are....just that incredibly awesome.
2) They are reading our fanfic. THEY ARE FRIGGIN' READING OUR FANFIC.
If it's option #2, SPN writers, you'd better damn well sail the fucking ship.