Gates' prediction: "Online communities will not be influenced by your location, but rather, your interest."

What we see now: All kinds of news sites and online communities focus on single topics. Many news sites have expanded to include separate verticals, offering more in-depth coverage on a given topic. Reddit is a great example of a website that's divided into subgroups, or "subreddits," that focus on interests rather than who you know or where you are.