title: Query multiple custom taxonomy terms in Wordpress 2.8?
body: <p>I created a custom taxonomy named 'technologies' but cannot query multiple terms like I can with categories or tags.</p>
  
  <p><strong>These querys DO work:</strong></p>
  
  <pre><code>query_posts('tag=goldfish,airplanes');
  
  query_posts('technologies=php');
  </code></pre>
  
  <p><strong>However, neither of the following work correctly:</strong></p>
  
  <pre><code>query_posts('technologies=php,sql');
  
  query_posts('technologies=php&amp;technologies=sql');
  </code></pre>
  
  <p>My objective: Show all posts with a technology of 'php' and all posts with a technology of 'sql'</p>
  
  <p>Any ideas? Is this even possible? Thanks!</p>