IANAL but I've felt that craigslist's insistence on other sites from being able to use their data or submit data into their site constitutes a monopoly. At the

IANAL but I've felt that craigslist's insistence on other sites from being able to use their data or submit data into their site constitutes a monopoly. At the very least they have been a bad stewart of a very useful and under-tooled set of important data.