Advertisements This. If your phone can't handle spoilers, don't read the thread from your phone. Don't expect everybody else to forgo established spoiler procedures for your benefit. As for back story, I think the way to go is label it as back story, and then put it in spoiler tags. That way people who don't want to get that extra information from other sources can easily avoid it, and people who want it can choose to open it. When providing back story, make sure that any future plot points are spoiler-nested.