Schemes are employing mechanisms to cause a post with little to no value to be granted rewards that it otherwise would not have received.
Schemes are usually psychological in nature. For instance, posts that consist of essentially just "Upvote and resteem my post for free Steem/SBD" are gaming the rewards system without offering content of value.
It's a human exploit and causes people to opt out of curation and centralizes votes. For these reasons, this is not good for the overall community.
This post will go to our flaggers currently fighting against schemes on the block chain.
List will be appended from last post for ongoing campaign. Rewards will be cumulative to help our downvotes receive suitable rewards for their service to the community. Rewards are contingent on community support. We cannot make this happen without YOU!
Link to previous update:
@steemflagrewards/steem-flag-rewards-watching-mentions-for-plagiarism-spam-schemes-scams