Craigslist is an online classified advertisements website that serves over 450 local areas worldwide. It allows free postings for jobs, housing, personals, and items for sale. The site is organized by geographic community and keeps a simple layout with helpful search functions to make navigation easy for a broad range of users. While some illegal activity has occurred through posts, Craigslist aims to maintain its service-based model focused on online communities and takes action to curb fraudulent or illegal behavior on the site.