Fading conversations
Active conversations stay; quiet ones fade. Each reply from someone other than the author adds ＋3d to the thread, but time left never goes above 45 days (＋1d (45d max)). A busy thread can live as long as people keep talking. Only your first reply each day counts. Self-bumps, pending, deleted or rejected replies don't. Replies always expire with their thread. You can delete your own posts any time. Nothing is archived.
Reactions
Reactions show who reacted when you hover. There are no like counts on profiles and no “top posts”.