I am all for not living near crazy neighbors. Growing up my parents had (well, still do have) a crazy neighbor and it just makes life difficult. They get the cops & EPA & any other government agency the man can get to listen to him called out on them regularly along with nasty/ridiculous letters.
The worst part is we believe that this man poisoned our last dog with rat poisoning and killed him, the current dog with rat poisoning 2 years later, but he survived & then earlier this year poisoned the current dog & my sister's dog who was visiting with anti-freeze. Sister's dog is fine because my parent's dog was diagnosed with it in the middle of the week so when her dog started acting weird the next weekend she rushed him straight to the vet clinic. My parent's dog wasn't so lucky and now has major kidney damage and is now on sub-q fluids every day/ever other day and now everytime my mom calls, I expect her to tell me he took a turn for the worse and they are putting him down.
My parents have put a fence around the house so the dogs can't get anywhere the property line with that neighbor.
Moral of the story, crazy neighbors are not something I take lightly. I do realize most neighbors are not as seriously screwed up as my parents neighbor, but they can make your life miserable.