Mac, iPhone, or iPad? Device Advice for Modern AdventuresS  You
may own a MacBook, iPhone and an iPad, but you shouldn't just
use each anywhere you'd like. There are rules, people. And Fast
Company shares them with us.  In a future full of iPads, iPhone
OS 4, next-gen iPhones, and iPod Touches with cameras (plus
whatever Gray Powell leaves at a German beer joint next week), a
significant portion of your tech life will likely bear an Apple
logo—and keep Steve Jobs in the finest stonewashed jeans
regionally available. The question isn't, "Do you use Apple
devices," but "Which one?" And "Where?" Here's a cut-out-and-
keep cheat sheet.  Infographic by Column Five