For those without any bitcoin to zap, they can provide a comment. Comments contribute to the discussion. High quality comments will receive zaps from those who find them valuable.

This allows those who have no bitcoin, to receive bitcoin through their own efforts and engagement.

Maybe someone has a large following, but limited time. Reposting helps spread valuable content far and wide, increasing its chance of receiving valuable comments or zaps.

Quote posting allows individuals to add their own personal view to another’s post, widening perspective or providing affirmation, as well as increasing the original content’s visibility.

Participation is the new algorithm.