It’s my firm belief that one day Amazon and sloths will rule the world. Sloths, because they’re so cute no one will suspect them, and Amazon because it basically does everything for us. Seriously; it’s about to take to the skies, it keeps track of all the books I want for Christmas (on my wishlist, if you’re interested), and now it lets you add shopping items to your basket via Twitter. To take advantage of this zazzy new “add it now, buy it later” service, connect your Twitter and Amazon accounts (don’t have Twitter I hear you say? Even the…