Ask yourself: do you really need to check your RSS newsfeed before you get home, or reply to that email before you can think about your answer? Is this really how you want to be spending your time?

That’s exactly the question Robert Matuksy wants you to answer every 20 minutes while you’re online. Matusky wrote a simple bit of computer script – you can copy and paste it right here – that, once installed, pauses everything you’re doing on the computer three times each hour with the question “Consider if this is really how I need to be spending my time. Continue?” Answer “yes” and the clock starts over again; answer “no” and the program exits until you start it up again.

The Internet is Stealing Your Time « Digital Frontiers. Right, I need to add to the ways my computer can interrupt me. That’ll help.