As I talked about in my post 'Kevin Spacey on Innovation and the Future of Television' the way we consume media is fundamentally changing. With the water cooler moment moving online to platforms like Twitter, having a cliff hanger or television moment ruined can become a serious threat to your viewing habits.
That's why I love the Netflix Spoiler Foiler.
A simple Twitter app, it scans your feed for designated danger words relating to the finale, and redacts them so you can check what's going on without ruining the ending.
Just remember, Heisenberg should be the danger. Not your friends on Twitter.