The HuffingtonPost's account has an additional "Fan Page" configured, whereas you are a regular user. Facebook makes a distinction and therefore has different access options.

See this [Facebook FAQ link][1].

You can create one for yourself it seems, if you like via: *facebook.com/pages/create.php*

Quoting from the FAQ:
> If you are the official representative of an organization, business, celebrity, or band, you can create a Page to represent your organization on Facebook.



  [1]: http://www.facebook.com/help/?faq=12814