If you comment, zap or boost; I'm following you! I think boosting is the best way to get the information out there. Zaps create the incentive for more similar content. Comments are great feedback for improvement and starting a dialogue. A lonely like let's me know you saw it but it wasn't worth zapping. I use likes as a way to acknowledge receipt of a comment in threads as well. It's interesting how the options for interaction are creating a sort of nostr language for me.