Designed to sit quietly in your USB port, the blink(1) will come to life when something important to you happens. Using their software you program what alerts you care about and what color you want to see. When an alert happens the light comes on. For example if you want a visual notification that you have new emails, or new tweets, then the blink(1) is what you want. You can even use ifttt.com to program it to indicate almost anything in your life that needs notification.