Lifehacker's Gina Trapani writes about a Mac utility for people who can't resist the temptation to check email or browse the Web while working on a project.
Freedom serves a simple purpose: It disables all wireless and Ethernet networking on your Mac for up to six hours at a time. After the time you specify is up, Freedom re-enables your network adapters and display a confirmation.
Freedom Temporarily Unplugs You From Online Distractions (Lifehacker)