In the past, in order to recruit employees you have to advertise opportunities in the local papers or hire local advertising agencies to put up bills on sidewalks and light posts. Today, notwithstanding the “post no bills” policies of most modern cities, recruiting employees via these methods is laughably obsolete.
Around 50% of all the people in North America use Facebook for recruiting, for example. Social media is a more up-to-date method for finding great people. Check out this infographic from Staff.com on social media for recruitment.