Google is reminding users in the U.S. and Canada to call their dads on Father's Day (http://www.huffingtonpost.com/news/fathers-day).In a post of the Google Blog (http://googleblog.blogspot.com/), Gmail Product Marketing Manager Michael Bolognino wrote to inform users that they can use Gmail's voice calling feature to ring up the old man on the cheap.More... (http://www.huffingtonpost.com/2011/06/19/google-gmail-fathers-day-call_n_879948.html)