The R-G can run their site anyway they want.  For whatever reason, they offered me the opportunity to post without three reviews.  I chose to accept their offer instead of continuing to decline to post.

They have their standards/reasons for that and I have my standards/reasons for either participating in their site or not.  

I do take a look at the five optional reviews every now and then and review them.  I just don't have to do three reviews every time I post.