EFF.ORG - May 22 - Facebook applied for a patent on "social dating" back in 2013, and earlier this year, the Patent Office granted the application. The first claim of Facebook's US Patent No. 9,609,072 describes maintaining a "social graph" of user connections, then allowing one to request "introductions" to friends-of-friends. Subsequent claims are variations on the theme, like allowing users to include "preferences" and rank their possible matches.
by Joe Mullin
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