Oddbean new post about login | logout I would like to be able to publish to > 100 relays. Can this ever be possible without using a blastr?
No, but why? Do you want to pay 100 relays to hold your notes? Broadcast is digital squatting, made possible only by taking advantage of hobbyist relay operators.
Server operators should decisively decide what they will store, and what they will actually relay to other servers. One way to reduce server operating costs is to reduce the excessive amounts of network bandwidth consumed on retrieving duplicate notes across multiple servers. This is going to break down if users have to alacarte subscribe to multiple relays just to see the posts in their connection circles