Oddbean new post about login | logout nostr:npub1g6plln20m4g7e42zedtrsxf08sc9mw2n23c6d2p02rf6302z4xkqyudgtx nostr:npub1jtm4dxvu3ccgk60wvvt0uw9j9vz7nuc80f7agrv0vgkkushxk5zq0rrxtn Then item value block supercedes the channel. What benefit does channel give?