I firmly believe that "what goes around comes around, twice as hard and twice as fast." Though I think it has more to do with connected social networks. If you are a do-gooder, people will talk favorably about you, your character, personality, work ethic, reward (both personally and professionally) etc... If you're an evil SOB with an agenda to use people for (political) gain, social or professional success, expect nothing less than frustration, set backs, isolatedness, distance, skepticism, and punishment from those in power above you. Believe me, word gets around about who you are and what you're like; hence, your reputation preceeds you.