The "reputation" feature has some potential for being an indicator of public opinion if only fixing could be prevented. But in reality, as a measure of public opinion it has many similarities to the the Iranian elections. George Bush no more deserves his -16 score than Orange deserves his +10. While it might just (only just) be conceivable that George has offended 16 people, it is nigh on impossible, in the real world, to contemplate that Orange could have 10 friends.
The only conclusion to draw (using the Iran metaphor) is that the Supreme Ayatollah has rigged the system to settle a score against his advisory George Bush and that he either owes money to Orange or he is married to his mother.
It is a fun feature, so let's not treat it as something to be taken seriously.