Maybe it's like "Readbility" and those other ways of de-cluttering a web page or standardizing your style as a reader? If you have a browser that is set up to let you choose a style sheet for display, you now have a "distraction-free reading environment."

I, for one, will be adding this to http://ristrettolo.gy and http://combinators.info. Markup -> HTML -> Markup. It's a crazy world!