facebook like reaction token ->😀 could be send to author of memo that appeals to you
https://simpleledger.info/#token/5fafd138938ce21264f8eae1d098564d5f6eb26d06aca8f1c79adcf75a1b3c1e
Making a token for each emoji would be a really quick and easy way to implement reactions on Memo
also such reaction tokens could be used on other social networks, if you sign up elsewhere with the same account with tokens, you can use them there too