title: how to crawl all wordpress pages
body: <p>I want to crawl all the wordpress blogs. Is there any quick approach to list all the secondary domain names under wordpress.com? For example <a href="http://developer.wordpress.com/" rel="nofollow">http://developer.wordpress.com/</a> </p>
  
  <p>If we can get the list of all secondary domain address, it should be easy and quick to crawl all the dataset. </p>
  
  <p>So can we do by 1) dns lookup for all secondary domain names for a website. 2) or by other hacking techniques?</p>
  
  <p>Thank you for the answer to this question!</p>