Summary : Employees engagement is a very trendy topic ans, as usual, social networking dynamics are seens as the miraculous solution to make it happen. The problem is, in fact, deeper : between in-trompe-l'oeil projects (implementing a social network to avoid looking into real issues), mistrust cultural reflexes towards organizations and people who can be more or less extrovert, tools are not a magic wand. Enterprises need to focus on employees' expectations (most of all in terms of HR), find a way to address people who have a rational...