Amazon's Kindle Worlds
I will be curious to see what other licenses they will get and if at some point we could write in older television fandoms that are no longer on the air- such as Tour of Duty for instance.
On one note, I'm pleased to see fandom come out of the closet as it were. But there is that part of me that worries as well. We write it because we love it, it was never about making money. It's about celebrating our fandom-- I can't help but be curious where this will lead with it turning into a paying market.