title: Introduction or simple examples for iteratee?
body: <p>I find Oleg's docs on Iteratee somewhat difficult to get into.  Especially since some of the functions in his posts to Haskell-Cafe aren't in the iteratee library (like <code>enum_file</code>).</p>
  
  <p>Is there a good introduction to iteratee somewhere, something that goes through basics like opening a file/socket, reading and processing the data.</p>