Have you ever bought a cup of coffee, a sandwich or a smoothie at a place that uses a customer-facing touch-screen payment system and been confronted with the question of whether you’d like to tip? If so, did you do it, at least in part, to avoid the embarrassment that might come from hitting “No tip” and then having to face the server?

In general, do questions of when to tip and how much confuse you? Do you have a tipping policy?

Tell us about your tipping experiences and opinions in the comments, then read the related article to learn what others say they do and why.

Find many more ways to use our Picture Prompt feature in this lesson plan. You can find all our Picture Prompts in this column.