I know! When you click on "My Reviews" you'll get your reviews as they appear with the dialogue bubble. Underneath your score for the movie, you'll see the number of votes your review has gotten, a link for editing your review and next to that the word "cons". That's short for "consider". If you click on that "cons" it will change to "uncons" which if you click again, will be removed from your list of considerations. Not so difficult, is it?
There's a useful scheme we have for getting exposure to reviews in our FYC. It's called FYCTH and explained in the relevant thread in the Reviews section. You're most welcome to join in, and give and receive votes.