Call before you dig

I am really impressed with the number of things that have gone online now - we are digging a garden and replanting a couple of trees, and in Minnesota you have to call "Gopher State One Call" so that they mark where all your utilities are buried (so you don't dig into a gas line or something!). I went to the website today to get the phone number and see what I need to do, and they have this simple little form you fill out and get an e-mail confirmation. All done. Nice.