“All real estate advertised herein is subject to the federal fair Housing act, which makes it illegal to advertise any preference, limitation, or discrimination based on race, color, religion, sex, handicap, familial status, or national origin, or intention to make any such preference, limitation or discrimination. We will not knowingly accept any advertising for real estate which is in violation of the law. all persons are hereby informed that all dwellings advertised are available on an equal opportunity basis."