"I’ve learned that when I have a positive thought about someone, it’s generally worth communicating it."
I've started to do this on a regular, almost daily basis.
If I come across something that sparks joy or interest - usually something I find here, on HN - I reach out to the author and let them know with a personal email.
I also sometimes offer a free-forever-no-strings-attached rsync.net account on the off chance that they would find that useful.
In reality, the Venn diagram of "people who write things that spark joy to the founder of rsync.net" and "people who aren't already self-hosting their own solution " is small.
But once in a while it really makes someones day ...