I hate the rating system on this site and I've come to realize from reading quite a few good stories that... Usually it's people 'trolling' and you can tell when even A/N's are rated badly.
http://en.wikipedia.org/wiki/Troll_(Internet)
P.S. this story is really good and your writing is really good. Don't pay attention to it. It's a downside to this site.
Author's response
Thanks so much! This was my first story so I was worried it wasn't very good.