This is a great post at The WM Parenting Connection called "Can't Parents Supervise Their Kids Anymore?" (sign up for the e-mail version so you don't miss a post!).
My opinion: I used to think things like leashes for kids were crazy and wondered why someone couldn't keep track of their dang kid. I felt this way because I had 3 Velcro children who would not leave my side. Then along came Eva. Pair that with living on a very busy street and, although I don't own a kid leash personally, I am now a believer in doing whatever it takes to keep your kid safe.
What do YOU think?