Safari 5 Reader - Why It Won't Work For Long

I once thought about writing something that adds a layer to a browser that allows a user to customize the layout of any webpage, to remove ads or any other visual clutter they didn't want (extreme personal itch). The ease at which content providers could switch around the html was one reason why I decided not to.

If this happens (very user-hostile, btw), it might turn into a cat-and-mouse game where you have some sort of AI trying to figure out what is relevant content and which are ads.