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YSK: Lemmy has 53k monthly active users but only 1172 have ever donated
(sh.itjust.works)
This is a most excellent place for technology news and articles.
If you can't be bothered to spend 5 minutes to put up the magical "do not use my resources" message (origin: Same-site) in your site's headers, then I think people would believe that using up a portion of your bandwidth is fine and act accordingly.