On Stack Exchange, users may gain a certain level of reputation.
What is reputation? How do I earn (and lose) it? in the Help Center
Are there any voting limits? Maximum amount of votes a user can use in a day and reputation requirements to vote.
How can I audit my reputation? How to get an exact overview of the actions that got you your reputation.
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As a registered user, your reputation on the site is a part of your identity on the site. It reflects, to an extent, your familiarity with the site, the amount of subject matter expertise you have and the level of respect your peers have for you. It can generally only be gained when other users of the site approve of the content you provide.
Reputation also determines a user’s privileges within the system. As you gain more reputation, the system learns to trust you and bestows new functionality upon you that low-reputation users cannot access.
As users gain reputation, they gain abilities and responsibilities. The required reputation amounts on different sites can vary slightly; see your site’s /privileges page for specifics. Common privilege levels for new sites, public beta sites and “normal” sites are described here.
Users gain or lose reputation based on the quality of their interactions with the system and other community members. The primary reason for reputation change is voting. Posts which are voted up increase their authors’ reputation; the reverse is true for posts which are voted down. Upvotes are more heavily weighted than downvotes.
Posts which have Community Wiki status are exceptions to the reputation rules; votes and acceptances do not grant reputation; bounties, however, still do.
* As downvoting a Community Wiki answer does not deduct reputation from the voter, removing a downvote on a CW answer doesn't return any.
* Downvoting a Community Wiki answer does not deduct reputation from the voter.
There are four ways a new user can earn their first bit of reputation:
†: On Stack Apps, you get 10 reputation for an upvote to a question, instead of 5.
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