American dialect words - Language Change

Here's a Huffington post article about a group that have been investigating dialect vocabulary across America with a view to documenting dialect words before they are lost in a homogenising process (dialect levelling).  It is interesting to consider whether new words that have covert prestige (the article refers to language signifying being 'in or out' of a group) will be a local variety or sociolectal as communication increases though increasing access to technology.