I'm 19, and I can give credit to a couple forums (The Web Squeeze and Forrst) and Hacker News for making me successful. If it weren't for a handful of people out of the buckets of everyone, I wouldn't have had the encouragement or motivation to be where I am today. I skipped college, and am cofounding my second company now and leading a team of talented people. I would have never guessed I'd be doing that..even two years ago. If it weren't for you guys and other forums giving me critique, criticism, and encouragement, who knows where I'd be. I've learned soo much from HN, it's ridiculous, but it has helped me in more ways than I can acknowledge.
Anyone can be an encouragement to someone like a younger me, but a lot of people don't. The ones who do however can really make a difference in peoples lives.