Great news, Facebook-lovers… there are even more exciting roll-outs! This time, Facebook is focusing on your mobile experience. About 40% of cell phone owners use a social networking site on their phone, and 28% do so on a typical day, making mobile the next frontier for social sites who don’t want to go the way of MySpace. Facebook has just unveiled some new, mobile-friendly features for Facebook profiles. There are four main improvements that will give you more opportunities to express who you are and control the content showcased on your profile. You can find the official word from Facebook here, or let us break it down for you: