Why your notes don't reach everyone
Nostr has no central server. Each client reads from its own set of relays, and an outbox-aware client can only find your notes if it knows your relay list and those relays are up. In practice many readers simply never connect to the relays you write to.
Broadcasting puts a copy of each note on as many relays as will take it, so whatever relays your readers use, your notes are already there.
Manual broadcasting vs a broadcast relay
Some clients have a 'broadcast' button that resends one event to the relays you have configured. A broadcast relay does it for every event, to every online relay, with no extra step, and tells you which relays accepted it.
Works with every client
Because blaastr is a standard NIP-01 relay, it works in any client that lets you add a relay: Damus, Amethyst, Primal, Nostrudel, Coracle, Snort, Iris, Gossip and more. Add wss://blaastr.com with write enabled and read disabled.
Questions
Will this slow my client down?
No. blaastr answers OK as soon as your event is queued; the broadcast happens on our side.
Do I have to give blaastr my private key?
Never. Your client signs as usual; blaastr only receives already-signed events and can't create or change them.
Can someone pay for me?
Yes. A subscription belongs to a pubkey and paying needs no sign-in, so anyone can gift a year of broadcasting to any npub.
Ready? Subscribe your npub, read the docs or browse the live relay list.