If you ever doubt the benefits of volunteer work, check with Peter Barber. A senior at The Oaks Academy in Spokane Valley, he's logged more than 700 hours of community service since his freshman year. And he believes his experience has helped him in myriad ways. "Volunteering," he wrote in a recent essay, "has become a word meaning 'work without pay,' which is quite an unfair definition." Instead, he likes to turn the definition upside down. In most cases, he said, people try a volunteer assignment for a while, and they realize the truth. They find themselves "doing work without money, but certainly not work without pay."