It's a bit like Christmas, in that not only do you get something pleasant for free, but you can also give something away at no cost to yourself.
So, although you can't make a living at it, you do get a few warm glows, quite a few laughs, and the vaguely humbling acceptance that someone said something you wish you'd said, in the way you wished you'd said it !
All made even better when you get a K-thanks......
