The Fox network has been running ad spots for National Mentoring Month 2010. Several point out that it's not the famous people who mentor you - but the coaches, teaches, managers and neighbours around you.
That's been the point all along. You are a mentor. You may not choose to do it formally but you influence people through thoughtful advice, listening and considered actions.
That's building a personal community. That's peer-to-peer mentoring. That's what success looks like!