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>
    <alllinks galcontinue="Best_3_topping_combination_on_a_pizza|175" />
  </query-continue>
  <query>
    <pages>
      <page pageid="81" ns="0" title="what is the most popular pizza topping?" />
      <page pageid="113" ns="0" title="Whats your favorite veggie pizza topping ?" />
      <page pageid="135" ns="0" title="Poll: How do you feel about pineapple on pizza?" />
      <page pageid="156" ns="0" title="Poll: What is your favorite topping on pizza?" />
      <page pageid="983" ns="0" title="Is BCBG clothing good?" />
      <page pageid="2142" ns="0" title="Do you think I look like Kristen Stewert? (Bella from Twilight)" />
      <page pageid="2967" ns="0" title="How old do i look? What celebrity do i look like?" />
      <page pageid="2982" ns="0" title="how old do i look to you (rate my looks)?" />
      <page pageid="2987" ns="0" title="How old do i look????????????????" />
      <page pageid="2994" ns="0" title="How old do I look in your opinion? Be honest:)" />
    </pages>
  </query>
</api>