jm memoL¾Memo can become like earn.com if it just add tips to reply and filter by user defined "min tip". It can be done within the current protocol by filtering replies only if there is a like > MIN
https://whatsonchain.com/tx/8b3edf857889069e6d6219b9136e002a6da1b24b0a9e9cbd26184c9fc8c5bb8e