title: Does someone know any user reputation engines?
body: <p>I develop website and would like to add reputation value to each user. So I'm looking for user reputation engine with features like:</p>
  
  <ul>
  <li>good reputation model</li>
  <li>users gain reputation when it do something what is liked by other users</li>
  <li>users with bigger reputation has bigger influence to other reputations</li>
  <li>exclude cyclic reputation exchange</li>
  <li>...</li>
  </ul>
  
  <p>Does someone know is there any implementions of such an engine? First of all I'm interested in python/django implementations but any other are interesting for me too.</p>