Just when you thought the Internet was getting too buttoned-down and super-serious for its own good, an offbeat startup comes along to remind us that irreverence and wit survive in the new media world of suits and VCs. But when Amazon recently acquired the quirky shopping site Woot, it definitely bought into, well, quirky. Unlike Amazon itself and most first-gen e-commerce plays, Woot does not try to impress with the infinite inventory a digital catalog allows. Instead, like Groupon and Thrillist, Woot sells a sensibility to shopping and in this case highlights only one item a day. The site offers …