If you are going to play the game youse gots to play by the rules Zuckerborg. No different than the rules for print ads.
Advertising under the Fair Housing Act doesn’t just mean ads in newspapers. The law says you can’t “make, print, or publish. . . any notice, statement, or advertisement . . . that indicates any preference, limitation, or discrimination based on a person’s race, color, religion, sex, handicap, familial status, or national origin.†That includes such things as applications, flyers, brochures, deeds, signs, banners, posters, billboards, and even pictures in your office. That also include the internet.