Keywords, Plot-Detail, needs spoiler metatag

After watching a movie, I was submitting 10 keywords /aka plot details, and noticed several accepted keywords that are/were basically outcome-revealing, and spoilers that give away the ending. SUGGESTION- The same easy Contributors can use something like [SPOILER: XYZ etc.. } ... I feel all submission areas need this for text boxes or check mark ticks for (*)Spoiler, in case someone looks these up before or during viewing something. The website can use simple HTML, PHP, css to hide spoilers and allow users to click to reveal one/ Reveal all. Thanks for considering.