I have never understood the concern with spoilers myself. You might know that "this happened" or "that happened," but the show is not about "this" or "that." It is about the process by which the story comes to "this" or "that." Only a complete lack of imagination can explain the thinking that knowing the "end" is equivalent to knowing the story. But then, I'm known to read stories back to front quite often, when the linear approach becomes too boring.