Most Watched Tv Shows: Cast/Set gossip?

Has there ever been any rumors or gossip come out from the set? What the cast is like, if there's any bad blood, etc?

I personally have never come across anything, which is surprising. I always saw gossip coming out about Game of Thrones and LOST back in the day, but The Walking Dead set seems to be tight-lipped.

The only stuff I've read is about cast members like Alanna and Christian apparently being a bit snotty at fan conventions, but that's it really.