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