Ways to implement auto voting feature on a content type?
The Rate might be useful for what you are trying to accomplish.


  This module provides flexible voting widgets for nodes and comments.
  
  Administrators can add multiple widgets. By default, there are 8 widget types to choose from:
  
  
  Thumbs up
  Thumbs up / down
  Number up / down
  Fivestar
  Emotion (this makes me mad, angry...)
  Yes/no
  Slider (Drupal 6 only)
  Custom