There's a difference between interfaces that are messy and those that have high information density. Also, there are quite a few sites which benefit (profit) f

There's a difference between interfaces that are messy and those that have high information density. Also, there are quite a few sites which benefit (profit) from throwing off the user's train of thought and injecting unrequested information: - Go on Amazon looking for a product and you'll see lots of other products that may be relevant but that are totally not what you were there for. - Facebook being an advertizing company is of course happy to inject promoted posts to satisfy their clients. Edward Tufte has written at length[1] about information density, and has shown that it is possible to design interfaces that contain a huge amount of information AND yet are clean to the point of being beautiful. [0] http://www.edwardtufte.com/tufte/books_vdqi http://www.edwardtufte.com/tufte/books_vdqi