Of course you understand I did click through on that before this post. Have you? When you do you land on your profile without any indication of what is expected. In fact, good design would mean any average user can land on the profile through _any_different_path_ and would "get" what is intended by the 50% rating.
But the real point of the post is, as currently designed, "50%" without context of "why". Except perhaps a _really_ disassociated and visually trivialized link.