It should be feasible to write a slap-drone (nod to Iain Banks) style Reddit bot that trawls all comments in the major subreddits and minor subreddits which the

It should be feasible to write a slap-drone (nod to Iain Banks) style Reddit bot that trawls all comments in the major subreddits and minor subreddits which their mods request, and performs a fuzzy match on the comment contents. Any comments found with substantively the same content gets the account followed around. Every comment from that account for a period of time gets an immediate reply citing the findings, and a warning to others that the account is possibly a commercial astroturfing account. Monetize by offering a paid opt-in subscription where subscribers who post comments with an appropriate disclaimer don't get slap droned. This has the advantage that even posting much the same comment into different subreddits using different accounts in each subreddit is detected.