An API seems like the antithesis of Craigslist. Craigslist is the online classifieds equivalent of the long form sales letter. To contemporary designers/developers, the design is hideous, the usability sucks, and if you asked for an off-the-cuff evaluation, most would tell you they (long form sales letters) won't work. Yet, they do.<p>Craigslist is similar. The site is sparsely designed, but makes no attempt at exploiting a minimalist aesthetic that we're used to seeing other places. The site continues to use bare bones formatting and lacks features that everyone expects. Forget an API, where are the like/tweet/share/etc buttons?<p>I think Craigslist's anti-feature pattner works for them. Posting your first listing to the site has some confusing points, but once you've made your way through the process once, friction is incredibly low. Craigslist is the ultimate in low effort online posting. I'm not sure an API would fit with this product philosophy.