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"?>
<api>
  <query-continue>
    <protectedtitles ptstart="2012-06-24T19:14:06Z" />
  </query-continue>
  <query>
    <protectedtitles>
      <pt ns="0" title="Index.php" timestamp="2012-09-12T10:48:30Z" level="sysop" />
      <pt ns="0" title="Activity Engine Optimization And Advertsing" timestamp="2012-06-24T19:27:41Z" level="sysop" />
      <pt ns="0" title="Man Free Phone Chat" timestamp="2012-06-24T19:26:32Z" level="sysop" />
      <pt ns="0" title="HalloranBatten310" timestamp="2012-06-24T19:25:44Z" level="sysop" />
      <pt ns="0" title="Search Engines For Child Safety Sites With Safe Chat" timestamp="2012-06-24T19:25:18Z" level="sysop" />
      <pt ns="0" title="Relationships In Ms Access" timestamp="2012-06-24T19:23:14Z" level="sysop" />
      <pt ns="0" title="Relationship Horscope" timestamp="2012-06-24T19:22:34Z" level="sysop" />
      <pt ns="0" title="DubTurbo Will Create Sounds for You" timestamp="2012-06-24T19:22:09Z" level="sysop" />
      <pt ns="5" title="Обсуждение ArhWiki:Политика конфиденциальности" timestamp="2012-06-24T19:15:22Z" level="sysop" />
      <pt ns="13" title="Обсуждение справки:Памятка" timestamp="2012-06-24T19:14:57Z" level="sysop" />
    </protectedtitles>
  </query>
</api>