http://www.searchenginejournal.com/google-unleashes-expanded-sitelinks-how-you-should-cope/32326/

This is a simple read on how the new sitelinks are expaning when specific searchs are made. For example: if you type in Unify Interacttive, LLC you will see the expanded version of site links. But if you only put in Unify Interactive with out the LLC at the end you will get less real estate. This link will also highlight simple tips to make sure your expanded site links are the best they can be.