I can definitely say I like reviews, but I won't say I'm a total review whore. Sure, reviews are awesome. They are even more awesome if they have some actual substance other than 'update soon', 'more please', or some crazy unintelligible nonsense that only make sense to the reviewer. It makes me more motivated to continue with a story when someone points out something that they like, or even offers some sort of crit. It's a great feeling.
What bugs me is when someone holds a story hostage for reviews. "I will not post the next chapter until I get [insert crazy number] here." In return, I'm less likely to sit and read the story.