When I put Reactuate into Hot or Not for blogs I was a little leary of giving them my email address, so I made a new one just for them. Got my first piece of spam on it. Not when I look at the rating page I don’t see my email address, so I don’t see how someone could get my address by crawling their site. Seems to me they had to give it to someone.
So remember that if you are going to enter blog hot or not.