title: Query string: Can a query string contain a URL that also contains query strings?
body: <p>Example:</p>
  
  <pre><code>http://foo.com/generatepdf.aspx?u=http://foo.com/somepage.aspx?color=blue&amp;size=15
  </code></pre>
  
  <p>I added the iis tag because I am guessing it also depends on what server technology you use?</p>