Relays store and provide your follow list and it’s caused me some frustrating performance issues. For a while I couldn’t use filter.nostr.wine because my graph was exceeding the preset websocket data limit. Took me and nostr:npub18kzz4lkdtc5n729kvfunxuz287uvu9f64ywhjz43ra482t2y5sks0mx5sz a while to figure that out.