MIAMI - JUNE 25:  A sign advertises a home for sale June 25, 2007 in Miami, Florida. The National Association of Realtors reported today that sales of existing homes fell in May to the lowest level in four years while the median home price dropped for a record 10th consecutive month. Getty Images logo Getty Images 55 months ago

MIAMI - JUNE 25: A sign advertises a home for sale June 25, 2007 in Miami, Florida. The National Association of Realtors reported today that sales of existing homes fell in May to the lowest level in four years while the median home price dropped for a record 10th consecutive month.