Twenty years ago today, Yahoo launched as a simple search engine created by Jerry Yang and David Filo. The landscape of the Internet has changed drastically over the past two decades. Yahoo is still in the game, especially with its recent acquisitions of Aviate, Flurry, and BrightRoll. Yahoo has been investing in adding new companies to its portfolio so it can keep enhancing ..... the way we use the internet today. Yahoo has recently been setting its sights on the mobile market as it hosted its first Yahoo Mobile Developer Conference last month.