AmiMoJo writes: In February, Facebook said it would step up enforcement of its prohibition against discrimination in advertising for housing, employment, or credit. Last week, ProPublica bought dozens of rental housing ads on Facebook but asked that they not be shown to certain categories of users, such as African-Americans,mothers of high school kids, people interested in wheelchair ramps, Jews, expats from Argentina, and Spanish speakers. All of these groups are protected under the federal Fair Housing Act. Violators can face tens of thousands of dollars in fines. Every single ad was approved within minutes. The only ad that took longer than three minutes to be approved by Facebook sought to exclude potential renters 'interested in Islam, Sunni Islam, and Shia Islam.' It was approved after 22 minutes.