Opinions expressed by Entrepreneur contributors are their own. If you're new to advertising on Facebook, there's a lot to like about this book. From getting started and launching and managing Facebook ...

Eric Kuhn is a 20-year-old summer intern here at CBS, and something of a Facebook expert. We asked him to blog about this web phenomenon that has now gotten Rudy Giuliani's daughter in hot water.

Almost a decade after the founding of Facebook and more than seven years after the first tweet, business leaders know that mastering social media is an absolute must. And now more than ever, ...