I normally post links to interesting articles via Twitter, but this page of position statements from the American Veterinary Society of Animal Behavior warrants its own blog post:
Walking down the streets of Brooklyn watching dogs and their people through a dog trainer’s point of view can be saddening sometimes… choke chains, prong collars, alpha rolls, and random pokes and jabs. Don’t treat your dog’s behavior issues with force and aggression. It only begets more violence. Enough said.