Mark Zuckerberg

MONTCLAIR, Calif. - Prince Sagala desperately searched for her son and daughter for 15 years, fearing she had lost them forever to the estranged husband who took them to his native Mexico. Her fears were replaced by joy when she typed her daughter's name into Facebook on a library computer and discovered that her children, now 16 and 17, were safe and with their father. She soon learned they were living near Disney World in Florida. -GILLIAN FLACCUS