Not only would I not click on the logroller's link, I would probably "demote" it by declaring it unhelpful.
Back in the day, Amazon had anonymous reviews. They were tied to your account, but you could choose whether you wanted your name to appear on there or not. One day Amazon had a glitch in the system where every anonymous reviews had the user's name on it. They discovered lots of authors praising their friends and panning their critics.
http://www.nytimes.com/2004/02/14/te...gy/14AMAZ.html
eP