Focus Booster helps you stay focused
Distraction is the enemy of focus. If you work at a computer all day, the possibilities for distraction are limitless. One way to stay focused is to use the technique of a firmly regimented working period followed by a short break period that I first came across at Merlin Mann's 43 Folders site. His technique suggested using 10 minutes of work followed by 2 minutes of rest, but the recently popular Pomodoro Technique suggests using 25 and 5. Whatever periods you use, the cross-platform Adobe Air based Focus Booster application is just the timer you need to keep you on task.
Focus Booster is a tiny timer that allows you to set a work and rest period, then away you go. You can focus entirely upon your work knowing that a rest period is coming soon, and you can check out your Facebook / Twitter / blog comments / whatever it is you fancy when the time comes.