Here is one and my guess that this is the main reason.
"the only reason I posted this article was so that I could get my free membership"
Some dancers want to be able to read the reviews for the clubs that they work at. To see what the customers are saying about the club and maybe themselves. Others of the traveling variety type, are using TUSCL as a guide on where to work.
Some will post a review but doing so will subject themselves to being called a shill.
Most never post on the discussion board.
As long as the article is relevant, I don't really see a problem with it. I have seen some bullshit articles, including, it could be reasonable argued, a couple of my own, and it would be nice if those were filtered out, in order to give the reward a little more meaning. However, I'm betting, given the lag that occurs between submission and approval now, that the editors are already up against it.