Publicly visible spaces (the default of the roomy.space net) should appear in a Space Directory:

• https://discord.com/servers
  • https://support.discord.com/hc/en-us/articles/360023968311-Server-Discovery
• https://discover.discourse.org/
• https://rvlt.gg/discover/servers

We don’t need search for the v1 of this; just need to list them all out as joinable spaces in the roomy.space root page.