Facebook has begun passing keyword data to websites that receive referral traffic from search queries that originate on the social network, allowing sites to more accurately track where visitors are coming from.
With the launch of Graph Search, Facebook more deeply incorporated Bing so that queries that can’t be answered by Facebook’s internal search, will direct users to a page of results powered by Bing. This could lead more users to conduct searches through Facebook that end up on third-party sites. However, previously, there was no way for someone to tell whether a visitor from Facebook came via search or a shared link somewhere on the site.
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