I considered Trolls those slap happy yet hearty individuals who have so little else to do they entertain themselves by gracing their "target" with as many unhelpfuls as possible. Without the ability to see the helpful/not helpful ratings, the Widget is going to be limited in revealing your actual Trolls. You may even come to assumptions that are not true...like, hey he gave me a one as a reviewer so he must have been the one who dive bombed my reviews. Maybe but it could also be due to many other reasons and/or a simple isolated incident.