I believe Vitor wrote up an NIP for integrating reddit like posts/"moderated" communities very recently, but as far as I know zappdit is the only one like that right now.

nostr:nevent1qqst8nah7exa9sf6m7aqxfvkkmstgdw4l2x8fc6306dcxfa4jtw793cprpmhxue69uhkummnw3ez6am0wfkxgtngxdazu6nsqgsyvrp9u6p0mfur9dfdru3d853tx9mdjuhkphxuxgfwmryja7zsvhqrqsqqqqqp9p9x2d