title: Optimum query delay for autocomplete
body: <p>In a <a href="http://developer.yahoo.com/yui/autocomplete" rel="noreferrer">yui AutoComplete</a> or similar how many milliseconds are you using as <a href="http://developer.yahoo.com/yui/autocomplete/#delay" rel="noreferrer">query delay</a> (time between the last key input and the request to the server)?</p>
  
  <p>I recently changed the default value of an autocomplete cotrol similar to yui's from 750ms to 280ms using <a href="http://en.wikipedia.org/wiki/KLM_(human_computer_interaction)" rel="noreferrer">Keystroke-Level Model</a> as a reference. </p>
  
  <p>Any other useful references out there? </p>