I'm one of those that will review a story if I love it, or the author. If there is something in the story that I think needs work I'll email them. I appreciate that myself. If I hate the story I tend to not come back. I will give a "keep going" on occasion, but I try to stay away from it unless I have something else to say. I try very hard not to leave the generic review and always try to put something personal in it. If I can't find something that jumped out at me I won't leave a review - why waste my time and their's? (and I'm rambling on again)