The Pope's American visit is drawing to an end with a Mass in Philadelphia attended by more than 1.5 million people.<br />But as he prepares to leave the US after a whirlwind six-day tour, he had some words of advice for the social media generation.<br />Pope Francis, who has more than 7.4 million followers on his English language Twitter account (and a bit fewer on his Latin one), said, "I would dare say that at the root of so many contemporary situations is a kind of radical loneliness that so many people live in today.<br />Running after the latest fad, a like, accumulating followers on any of the social networks."<br />Addressing an audience of American bishops at the St Charles Borromeo Seminary, Wynnewood, Pennsylvania, he added, "Today consumerism determines what is important, consuming relationships, consuming friendships, consuming religions.<br />Social bonds are a mere means for satisfaction of my needs."