This is how you give out lingots: Go to a discussion, comment, or look at a comment ON A DISCUSSION.
Then next to vote up or down there is a word "Reply" then next to it on right "Give Lingot" GIVING LINGOTS CURRENTLY ONLY WORKS ON A DISCUSSION!!
You click on the button that says "Give Lingot" in the right hand corner of a question or next to the "reply" button on a comment! I have also wondered this before! P.s What is the purpose of the "Give lingot button?