For Librarians already in the center of controversies about the survival of the idea of the 'Physical Library', this piece from Forbes by Eric Jackson, Here's Why Google and Facebook Might Completely Disappear in the Next 5 Years will give you even more to worry about. It touches on how "Baby Boomers behave differently from Gen X’ers and (now we are seeing) additional differences with the Millennials."
Web 1.0 (companies founded from 1994 – 2001, including Netscape, Yahoo! (YHOO), AOL (AOL), Google (GOOG), Amazon (AMZN) and eBay (EBAY)),
Web 2.0 or Social (companies founded from 2002 – 2009, including Facebook (FB), LinkedIn (LNKD), and Groupon (GRPN)),
and now Mobile (from 2010 – present, including Instagram).