Netgear, one of the companies that makes the thing in your closet that keeps you on Facebook for hours a day, is celebrating its 20th year in networking tech with a device(s) that could turn Wi-Fi into something as turnkey as your smartphone.And, no, it's not another router. It's Orbi, Netgear's new two-point (or more) Wi-Fi system. For $399 (about...