Craigslist is a website that lists classified ads divided by sections including jobs, housing, personals and more. The Bulk Posting API provides users with an interface that allows for the submission of multiple posts in a single request. Requests must include a description, a post category, the city the post will be submitted for and a reply email. The API uses HTTP calls and responses are formatted in XML.
For the last six years there has been a Craigslist API, but it's not the one developers have been clamoring to get their HTTP requests on. It's still likely an important part of the company's business model, because it allows bulk posting to its real estate section, the site's main source of revenue. Yeah, but what about that readable API everyone wants?