An independent service that publicly rates a person's credibility and consistency (maybe other metrics such as honesty or accuracy) objectively into a reputation score. You would start out rating people for free, probably celebrities, prominent politicians, persons of note in scientific fields, journalists, etc. These would have to be thoroughly documented profiles with established public criteria for the scores in 100% transparency. Once you have established a reputation for accuracy you can start to charge other people to have their score calculated and added to the reputation index. Maybe have a public poll for who to profile next and do several for free each month. Basically a ratings agency or better business bureau type system but for individuals who want to be public figures and people of influence. Part of it would be validating the person's real life identity and the online personas that the person uses so that online exchanges (ratings, discussions, reviews, etc.) could potentially be filtered for only validated real individuals if desired.