LOS ANGELES - The Orange County man who killed two neighbors and then turned a shotgun on himself desperately sought friends on the Internet but was ridiculed for his sometimes angry and bizarre messages. William Freund, 19, had no more success finding companionship online than he had in high school, where his poor social skills made him the butt of cruelty. In the wake of last week's rampage, Tiffany Key, Freund's former high school classmate, wondered via the Internet: "Think about your interactions with him. Were they positive? Or were you one of those kids that made his life hell?...