➔    You can make a very strong argument that LinkedIn has had the greatest impact on the job-search world in more than a just couple of the past decades. The data varies, but it can be staggering. Some say recruiters use LinkedIn to resolve more than nine times out of ten in job searches and candidate vettings. Others claim that in 70 percent of all professional job placements, LinkedIn plays some significant role. And you know what they say, numbers don’t lie.