It's kind of like PageRank... users vote for other user's reputation (by clicking on the scale), and it's weighted by how "important" they are within the forum. It works like this :
* Everyone starts with a reputation of 10
* You can alter other people's reputation by 1 point by default
* For every 365 days after you register, your altering power increases by 1
* For every 1,000 posts, your altering power also increases by 1
* For every 100 reputation points that other's give you, your altering power increased by 1
* User must have at least 50 posts before they can affect other's reputation
* You must have a reputation of 10 or higher to be able to affect others (it's 10 by default)
* You can alter up to 10 user's reputations per day
* You must alter different user's reputations before you can alter the same user's again
* Everyone starts with a reputation of 10
* You can alter other people's reputation by 1 point by default
* For every 365 days after you register, your altering power increases by 1
* For every 1,000 posts, your altering power also increases by 1
* For every 100 reputation points that other's give you, your altering power increased by 1
* User must have at least 50 posts before they can affect other's reputation
* You must have a reputation of 10 or higher to be able to affect others (it's 10 by default)
* You can alter up to 10 user's reputations per day
* You must alter different user's reputations before you can alter the same user's again