You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information.
<?xml version="1.0"?>
    <alltransclusions gatcontinue="Disambig|1632" />
      <page pageid="1287" ns="2" title="User:TheKillerRabbit" />
      <page pageid="1572" ns="0" title="Stefan De Young" />
      <page pageid="1576" ns="0" title="Alex Foo" />
      <page pageid="1620" ns="0" title="Nevin Hotson" />
      <page pageid="1956" ns="0" title="Val Sirbu" />
      <page pageid="1994" ns="0" title="Ayse Turak" />
      <page pageid="1997" ns="0" title="Alex Ghosh" />
      <page pageid="2682" ns="1" title="Talk:Example Member" />
      <page pageid="3630" ns="3" title="User talk:FaraFellow" />
      <page pageid="3685" ns="3" title="User talk:BenSeguin1129" />