But what if the concept itself is the subject? Context: during someone's quest for a good OS keyboard, the FUTO one was falsely (or probably just naively) presented as an alternative. That comment thread was moderated to bits, but another user was interested enough to start a topic "Thoughts on FUTO keyboard?" which to me suggests they want to learn more about the matter and why it might or might not be OSI compliant. I dove into all mentioned articles in that thread to learn why and lo and behold the entire post was removed before I could thank the useful comment(er)s there. By removing that, other users can't benefit from that discussion if they weren't quick enough.