Thus is good man, another one i wish to add , is the creation of good contents will decrease, if one is involved in groups that swap upvotes-for-upvote, he or she might not be bothered to even make nice content when one knows that , he/she must get upvotes for every work they do whether good or bad.
And again involvement in group like this drains peoples voting power , that is when we start seeing post that got more than 500 upvotes earning less than a dollar.