Todd Bishop has some insight on what Bill Gates' face reveals, with info from a USA Today article about facial coding. It's not an exact science, but some researchers say they can learn a lot about someone by examining the hundreds of muscle movements in their face. If there's any truth to this, then Gates is: "at ease, affable and low key," but displays "small, weak social smiles, and touches of contempt." As for Amazon.com CEO Jeff Bezos, he "had 20 percent true smiles with laughter, but they were combined with the lowering and knitting of his eyebrows and the wrinkling of his nose." The result, says one expert, is an effect of "enjoyment tinged with disgust and negativity." Ouch.