Maybe I should write a Chrome plugin that deliberately makes the browsing experience so painful, you'll want to do just about anything else.
Advanced feature: Whitelist certain sites and certain hours (would still like to get work done). But this should be difficult to do, with prompts that keep asking "do you really want to do this?" and "Are you sure this isn't a site that's a mind-numbing time suck that's trying to hoover all your private data?"
