Unfortunately this is the case with many such forums, the only difference with Steemit being the fact they misleadingly appear to offer "rewards" for just up-voting other posts. What Steemit does not tell potential members however is the fact that they will more than likely never make a dime from their up-voting, not to mention a number of other negative aspects of the system that they are just not clear about, such as needing to buy Steem in order to have any voting power, being able to essentially up-vote only a very limited number of times and only at certain times in order to be counted, and so on, and so on, not to mention the fact that when a member no longer wants to be on Steemit, it takes 13 weeks to get his Steem investment back. A true scam if I have ever seen one!