mirandakatz writes: Craigslist has endured for more than two decades, offering a service that is simply "good enough"—but not great. It facilitates peer-to-peer interactions, but does little to ensure that those transactions go off seamlessly. Enter the myriad startups trying to disrupt the “moving used crap around” space. At Backchannel, Justin Peters takes a deep look at one such startup—AptDeco—which, like Craigslist, allows users to list and view ads for used furniture—but unlike Craigslist, it also processes payments, coordinates pickup and delivery, and serves as a buffer between buyer and seller. Writes Peters, "everyone only has about a dozen major websites filed away in their brains. Once a site has made its way onto this list, it takes a lot to dislodge it: It has to start sucking, or change drastically, in order to lose its spot." Can AptDeco unseat Craigslist from one of those 12 spots?