title: What tag schema(s) are the most efficient/effective?
body: <p><a href="http://www.pui.ch/phred/archives/2005/04/tags-database-schemas.html" rel="nofollow noreferrer">http://tagging.pui.ch/post/37027745720/tags-database-schemas</a></p>
  
  <p>Stackoverflow's tag handling is among the best that I've seen so far.</p>
  
  <p>Does anyone know if it is a schema pattern I could get some ideas from?</p>
  
  <p>Otherwise, I'm just looking for suggestions on what tag schemas others have successfully implemented.</p>