(CNN) -- Facebook CEO Mark Zuckerberg talks about "sharing" info and "connecting" people to each other more than Kanye West talks about himself. And the site's mission statement hits those themes hard, saying Facebook's goal is to give people "the power to share and make the world more open and connected".
So it might come as a surprise to Facebook users that the site takes a do-as-I-say-not-as-I-do approach to letting people share their own information with one of its biggest competitors.
In what's been called "data hoarding," Facebook will not let users export their Facebook contacts lists -- which include pictures and e-mails -- to Google's e-mail system.
That's not new, but Facebook's anti-sharing policy has come under scrutiny recently since Google last week retaliated by blocking users from uploading their Gmail contacts to Facebook, according to TechCrunch.
Facebook, in turn, found a work-around that let it pull in contact lists from Google anyway -- a sort of technical slap in the face to Google.
"We're disappointed that Facebook didn't invest their time in making it possible for their users to get their contacts out of Facebook," a Google spokesperson wrote in an e-mail to CNN. "As passionate believers that people should be able to control the data they create, we will continue to allow our users to export their Google contacts".
Facebook did not respond to a CNN request for comment.
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