#6FriendsTheory PARIS, 2015-1-13 — /Travel PR News/ — Mercure has decided to check the well-known six-degrees-of-separation theory, which claims that we are all only six people away from everyone else on the planet. Mercure is introducing a worldwide digital operation, “The Six Friends Theory”, based on this principle and leading to an unprecedented human experience combining the power… Read the full press release