title: How do *you* use auto_increment_increment?
body: <p>Re: MySQL's global configuration option <a href="http://dev.mysql.com/doc/refman/5.0/en/replication-options-master.html#sysvar_auto_increment_increment" rel="nofollow">auto_increment_increment</a>.</p>
  
  <p>Other than</p>
  
  <ol>
  <li>multi-master/circular replication in conjunction with <a href="http://dev.mysql.com/doc/refman/5.0/en/replication-options-master.html#sysvar_auto_increment_offset" rel="nofollow">auto_increment_offset</a></li>
  <li>artificially "beefing up" stats when user/object id's are visible to the end users</li>
  </ol>
  
  <p><strong>How/Why have you seen <code>auto_increment_increment</code> used in practice?</strong></p>