Would vote no if there was a poll. It would be nice in some situations but I think those of us that would use it legitimately will either already be in a thread clearly marked as spoilers, or we will announce it prior to the info. Too much potential for abuse, not enough functionality or practicality. Imagine an entire thread filled with it for no reason, or every other thread having one or two shitposts that are hidden and you waste your time clicking them thinking they are important. It would be funny the first few times.. maybe.