craigslist and discrimination

This is a tough issue. To summarize: craigslist is a massive, not for profit (mostly) classified ads site where people can post or look for jobs, housing, objects, relationships, whatever. craigslist is currently being sued by the Chicago Lawyers' Committee for Civil Rights Under Law for allowing users to post discriminatory housing ads, like the ones listed in the CNN article (no minorities; female Christian wanted; etc.)

There are at least two questions at issue here: one, should the same statues that apply to newspapers apply to craigslist? And two, if a female Christian wants a female Christian roommate, how does she go about getting one?