That’s awesome. Hashtags have great UX and are highly underutilized in Discourse. Would be cool to figure out how to integrate them into the SourceCred protocol/game more.
One idea would be to have #props be a way to send Cred to a person to say thanks as a tip.
Could also maybe explore hashtags as an MVP for simplified boosting (with a standard/fixed boosting value) before creating a dedicated UI.