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>
    <logevents>
      <item logid="76" pageid="26" ns="0" title="Página principal" type="patrol" action="patrol" user="Matiasz" timestamp="2011-08-29T16:34:37Z" comment="">
        <patrol cur="17677" prev="17116" auto="1" />
      </item>
      <item logid="75" pageid="0" ns="0" title="Nuevo proyecto" type="delete" action="delete" user="WikiAdmin" timestamp="2011-06-09T19:36:38Z" comment="el contenido era: «Et5kf1»" />
      <item logid="74" pageid="0" ns="0" title="Temas de Interés" type="delete" action="delete" user="WikiAdmin" timestamp="2011-06-09T19:36:23Z" comment="el contenido era: «&#039;&#039;&#039; LbzPhT  &lt;a href=&quot;http://ehhfthfohxmh.com/&quot;&gt;ehhfthfohxmh&lt;/a&gt;, [url=http://wdokhvudjwnx.com/]wdokhvudjwnx[/url], [link=http://yuhsdbbjwdgs.com/]yuhsdbbjwdgs[/link], http://cdtjjbmsvscx.com/»" />
      <item logid="73" pageid="0" ns="3" title="Usuario discusión:89.248.248.152" type="delete" action="delete" user="WikiAdmin" timestamp="2011-06-09T19:34:49Z" comment="el contenido era: «This forum needed shkiang up and you?ve just done that. Great post!  tMVOsG , [url=http://dfpancfmccnp.com/]dfpancfmccnp[/url], [link=http://wpxyysevgsht.com/]wpxyysevgsht[/link], http://xqwxjexidsnx.com/  X1q3Iv  &lt;a href=&quot;http:/...»" />
      <item logid="72" pageid="0" ns="12" title="Ayuda:Cómo se edita una página" type="delete" action="delete" user="WikiAdmin" timestamp="2011-06-09T19:34:24Z" comment="el contenido era: «Now I know who the bariny one is, I?ll keep looking for your posts.»" />
      <item logid="71" pageid="0" ns="2" title="Usuario:222.122.227.211" type="delete" action="delete" user="WikiAdmin" timestamp="2011-06-09T19:34:12Z" comment="el contenido era: «It&#039;s spooky how clever some ppl are. Tahkns!»" />
      <item logid="70" pageid="0" ns="4" title="LinkinWiki:Acerca de" type="delete" action="delete" user="WikiAdmin" timestamp="2011-06-09T19:27:35Z" comment="el contenido era: «, http://viagraonlinehq.com/ Cheapest viagra online,  :-DD, http://www.viagraonlinemed.com/ Viagra pills online,  zjb, http://www.usmedshq.com/ Cialis online,  0274,»" />
      <item logid="69" pageid="67" ns="1" title="Discusión:Página Principal" type="move" action="move" user="Matiasz" timestamp="2011-05-16T17:06:18Z" comment="">
        <move new_ns="1" new_title="Discusión:Página principal" />
      </item>
      <item logid="68" pageid="26" ns="0" title="Página principal" type="protect" action="move_prot" user="Matiasz" timestamp="2011-05-16T17:06:18Z" comment="heredando la protección al trasladar [[Página Principal]] a [[Página principal]]">
        <param>Página Principal</param>
      </item>
      <item logid="67" pageid="66" ns="0" title="Página Principal" type="move" action="move" user="Matiasz" timestamp="2011-05-16T17:06:18Z" comment="">
        <move new_ns="0" new_title="Página principal" />
      </item>
    </logevents>
  </query>
  <query-continue>
    <logevents lestart="2011-05-16T17:06:18Z" />
  </query-continue>
</api>