Priceline Seeks Results From Facebook as Google Wins Ads – Bloomberg.

“For Facebook and Twitter, we have endless amounts of money. But we haven’t found anything there.” Chief Executive Officer Darren Huston said yesterday in an interview at Bloomberg’s New York headquarters.

The comments lead the discussion as to which digital marketing media are most effective. Facebook and Twitter have grappled with questions of whether their social media ads provide a substantial return on investment for marketers, particularly at travel and e-commerce companies.

Priceline’s online marketing confirms that Google, is the best source for delivering traffic. About 90 percent of Priceline’s digital ad spending is with Google, according to Mark Mahaney, an analyst at RBC Capital Markets in San Francisco.