I upvote comments readily, even if on mobile where the UX makes this tricky as I fear accidentally down-voting. I am not in the habit of upvoting articles, thi

I upvote comments readily, even if on mobile where the UX makes this tricky as I fear accidentally down-voting. I am not in the habit of upvoting articles, this is mostly habit. On Stack Overflow I don't hesitate to upvote useful questions and useful answers, comments too. On a separate note, how many people on Stack Overflow know what a 'stack' is, nevermind the overflow condition... I am not sure my colleagues would have a clue.