regardless of any conference - whats most important is the outcome of the conference.
- To recruit users - and if yes what's the target percentage ?
- To research what potential users like out of nostr ? and build it ? and test it within that 2-3 days ?
- to test the market on certain innovation in digital tech on nostr ?
- if its country by country - whats the outcome for the country ? is there a hunt for local relays, local contents by the locals ?
Conferences are great to meet up but traveling around the world to the same bitcoin oriented conference 1-2 times a month, with absolutely no marketing ROI, but with high marketing expenditure - is a sure guide to becoming broke fast. That and not growing users fast enough becomes an unsustainable business model. Eventually the product will get blamed for it.
Pick a few conference and maximise the outcome out of it