Spoilers are critical in this site, hiding up information and answers from those who want to keep the mystery and because you're supposed to. Now most new users who answer, don't use spoilers because they don't know how to do that.
So in short, can we add a bullet point for spoilers in the "How to Format" box you see while creating answers and posts? The bullet point would be like this:
- Make spoiler by adding >! in front of line
or something short and simple like that.