<http://schema.org/alternativeHeadline>
"Freakonomics hosted a podcast\u00A0this week where authors Stephen J. Dubner and Steven Levitt explore whether tipping should be banned."^^<http://www.w3.org/2001/XMLSchema#string>
<http://qz.com/91185/why-you-should-tip-the-us-labor-force-counts-on-it/>