Summary : recruiters still struggle to measure the actual performance of social networks for recruiting. Surely underestimated, obviously underexploited, certainly misused. If we try to digg a little further, two things are clear. First, candidates don't make a good use of these tools, what does not help to get any added-value and raises a question that has nothing to do with tools but with education. Second, the logical difficulty or recruiters to adopt an engagement strategy instead of a mass-targeting and selection one. What raises one question : what...