"Hi, I just want to say thanks for this account, and the work you put into making people smile.  I volunteer every week at a small soup kitchen that draws a group of "regulars." Somehow we established a tradition where everyone expects me to tell them a new joke every week. So now every week I scroll through your feed to find just the right riddle for the week. And every week, they laugh and roll their eyes, and the room is a little happier. So thanks for brightening not just my day but the days of 20-30 unhoused or precariously housed people who are struggling right now."