Unfortunately, most of mine are of the "thanks for the add" or "thanks for the add back" variety. I've also received some return props, though those are for content I have added too so it's hard to distinguish between them and genuine props - I just propped the other person first and they mention that in their comment.

I think people here in general have forgotten or just don't realise what props are actually for. I very rarely see props given for actual content.

BACK IN MY DAY--
[three-hour rant about misuse of props]
So in conclusion, while the Wall feature was probably meant as an alternative to conversation props, it seems to have fused with them. Which is unfortunate, because props are now expected rather than earned, but it does make the rare genuine content prop more meaningful.... at least to the dinosaur population.

^As I understand it, the wall feature was meant to enable people to have conversations or give holiday messages without needing to also give a prop. But a lot still add props to those messages.

It's props for your comment and thanks for the add. I can pretend it's content.

I've now added competition prize props as a category, having remembered that one.