Stay Focused
If you're like me, you're probably guilty of occasionally wasting time on Facebook and other social sites when you should be doing something more important. Stay Focused is a Chrome extension designed to help you stop wasting time on those sites and get your work done. With Stay Focused installed you can set a time limit for yourself on the sites that you tend to waste time on. Once you've used up your self-allotted time on those sites you won't be able to revisit them in that browser until the next day (or other time you select).