A few weeks ago, Facebook purchased the company behind fitness-tracking app Moves— and as is often the case when Facebook snaps up a company, Moves users were immediately concerned about what might happen to their data. The company tried to head that off in its blog post announcing the acquisition, saying “the Moves experience will continue to operate as a standalone app, and there are no plans to change that or commingle data with Facebook.”
Commingling, or merging, data would allow us to identify Moves users who are also Facebook users — we have no plans to do that. In other words, Facebook is not adding Moves user data to a Facebook user’s Facebook account. But, Facebook will be providing support and services to the Moves app and to be able to do this, we have to have access to the data that Moves already collects from its users — which is “sharing” data.
From: The Verge