Spoilers that have ruined Season2
1.TellTale revealing that they would explore Kenny's fate before season 2 came out. So no surprise that it was him who was thought to be dead.
2.Bringing out pre-release trailers right before each episode which gives too much away, teasers at the end of episodes are enough for the next episode.
3.Achievement lists being released months before the actual episode is released!! wtf man? who's stupid idea was that?
4.Assholes being able to hack the game to find information on the next episode that comes out, how the hell is that made possible when it isn't even available for download yet? Then of course they post their findings.
It's hard to avoid these things but in all honesty they should not be available until the episode has been released.