The French word frisson describes something English has no better word for: a brief intense reaction, usually a feeling of excitement, recognition, or terror. It's often accompanied by a physical shudder, but not so much when you're web surfing.
You know how it happens. You're clicking here or clicking there, and suddenly you have the OMG moment. In recent days, for example, I felt frissons when learning that Gary Coleman had died, that most of the spilled oil was underwater, that Joe McGinness had moved in next to the Palins, that a group of priests' mistresses had started their own Facebook group, and that Bill Nye the Science Guy says "to prevent Computer Vision Syndrome, every 20 minutes, spend 20 seconds looking 20 feet away."