"No one ever thought to report him missing because they thought he wanted to be missing."

Grateful Doe, the corpse found with 2 Grateful Dead ticket stubs in his pocket, is identified after 20 years. 

ADDED: "How Internet sleuths on Facebook and Reddit solved the 20-year-old mystery of a missing teenager." 

“It just broke my heart,” said Lauren Rutley, who helped publicize Doe’s case online. “That he was so young, and no one had reported him missing at the time.” Rutley was one of dozens of volunteers and amateur detectives who worked on Grateful Doe’s case over a period of nearly 10 years. Users on Websleuths, a forum popular with cold-case and true-crime fanatics, had been cross-referencing Grateful Doe’s case against hundreds of entries in the missing persons’ database since July 2005. The search only heated up last December, however, when Reddit took on the case....