There's not much to the Facebook logo, with its block lettering on a blue background. Very simple. Very boring. Very familiar. And that's the point!
Yamaguma's take: "Here's an example of how a very generic, non-exciting logo can become a well-recognized everyday brand. It carries the sense of simplicity and familiarity that I believe Facebook wants to communicate. Its san serif block letters have a sense of universal acceptance. But is it endearing enough to stand the test of time?"