I actually like the opportunities for distraction that computers offer. Often when I am reading/working on something long and complex I fond myself needing to take frequent breaks to allow my brain to digest/recover from what I'm reading. Before computers, I would take a walk, eat something or stare at a wall. Computers allow those breaks to be much more productive
If I'm reading something simple enough that I don't need the time to digest/detox I rarely find I get distracted.