California teen Teagan Stedman was just nine years old when he learned that his good friend, Alex, had been diagnosed with cancer. And Teagan wanted to do something to help. So, with the assistance of some very kind donations from the folks at Guitar Center and the famed Roxy, Stedman put on a concert—Shredfest—the proceeds of which would go to kids battling cancer. The event proved to be a hit and, five years later, the organization is thriving. Stedman uses Twitter as a way to help promote his cause, as well as other like-minded organizations.