Excellent read, if you are going to be using Tor and want to stay off the grid, ie. journalism, keeping sources hidden - you need a laptop (netbook that has no personal info, pre-loaded with your own bridge node as first hop) and a wifi stick - only connect from remote wifi sites and don't create any patterns in visiting your physical locations nor sit in front of security cameras. Swapping the wifi stick between each use will make you virtually invisible.