I like it. A little off topic, but the Google Chrome Extensions that override CSS get my brain thinking about something like this on a different scale. For instance, could someone build complete Facebook or Twitter face-lifts? If it's possible, the consequences of that permutation would be interesting. Especially now that the modern browsers are moving towards auto-update, which encourages a higher likelihood of something like this taking off.<p>If marketers starting picking up the idea, I see "shoot here to win the prize", phone number, email address collecting type of ads promising to "bring facebook back the way it was", "just enter your email address and we'll send you the link!" If you don't think this could work, just remember that a few years back people were installing emoticon packs and CometCursor just so they could have a customized, albeit terrible, experience.