Hi @vimukthi , your suggestion on how to algorithmically detect spam / repeated comments (= content analysis), could be another extension of my UserAuthority (UA) spam identification capabilities (= user authority / popularity analysis).

Your suggestion could also be implemented stand-alone via bi-directional hashing encryption, by calculating "character proximity". Lots of difficult words here ;-), but your solution on its own is not really needed. Compare this principle to copy-pasta webpages: it is impossible to stop authors publishing such webpages, but it's Google's only task to prevent those pages getting to the top of the search rankings (SERPs).

Seen from a Steem ecosystem perspective, it's merely important to stop those comments from receiving high-value author rewards. Hence the need for my UA algo to be implemented Steem-wide (See my HF22 proposal UA * SP at the bottom of my article.)