In this day of Facebook and Twitter, it's almost inconceivable that missing people cannot eventually be found.
Just this year, four young women from the Greater Pittsburgh area have gone missing and are listed as endangered runaways.
National Center for Missing & Exploited Children is featuring their cases in hopes of bringing them home.
Maybe you know them or where they are. Please share this story on Facebook and Twitter, too, so more people are watching for them.
Cheyenne Hurt, 18, has been missing from McMurray since April 4. She is believed to be in the West Chester, PA area.
She is described as biracial (Spanish and black), 6 feet tall, about 170 pounds, with brown hair and brown eyes.
Diamond Monae Faulk
Diamond Monae Faulk, 16, is missing from the Verona/Penn Hills area. She may be with a male and a female companion and may have traveled to the Baltimore area.
Her hair might be dyed pink and worn in a mohawk style. She is described as black with black hair and brown eyes. She is about 5 feet, 4 inches tall and about 165 pounds.
Shaylynne Eubanks, 18, has been missing since Feb. 16 and might still be in the Pittsburgh area.
She is described as biracial (black and white); about 5 feet, 5 inches; 130 pounds; with brown hair and brown eyes.
China Aaliyah Brown
China Aaliyah Brown, 15, has been missing since July 11 from Pittsburgh. She might be in the company of an adult male and traveling to South Carolina.
She is described as black; 5 feet, 6 inches tall; 132 pounds; with black hair and brown eyes.
Anyone with information on the young women is asked to contact the National Center for Missing & Exploited Children at 1-800-843-5678 (1-800-THE-LOST).