Well, I try my best to NOT spoil it, because some readers may lose motivation in reading it. Plus, I also don't like spoilers, so I tend to not spread spoilers myself. Although anybody can ask me questions about my work like "What was your motivation into writing this?", or "How did you think of everything in your novel?", I would definitely answer them, but if the questions would lead to spoilers, I wouldn't answer them, of course. However, I kind of like secret hints or points in stories wherein it isn't really a spoiler, but rather, kind of like an easter egg. 