Thanks for all the help so far: I jumped 40 positions within the next couple of days!
http://www.ebookmall.com/author/alyce-wilson
BTW, you do have to sign up for a free account in order to leave a review, but I noticed that every time I got a review, my rank jumped up several spots. Personally, I use my Hotmail account to sign up for online things like this, if I'm not certain of what kind of mail they'll send. So far, I've received nothing except for a notification when my piece initially went online.