Riddle:

“You can’t sell, own, or buy me, but I can be measured, wasted, and saved, every person has me, and for important things, I’m made, I’m not the air you breathe, I’m also something you can’t trade, What am I?”

Look for subtle clues in the tags, title and background photo. If you look very close on this page, the answer is actually typed somewhere on it. Good luck!

When you’re ready, you can check your answer here.