Does LinkedIn's effectiveness sit on a throne of lies?

I've always been a big fan of LinkedIn in any number of ways -- as of this morning, I have 458 posts over there, although admittedly almost all of them are repurposed from this site and most are horrifically unpopular -- and back in March 2014, I wrote a post about how LinkedIn drives 4x the traffic to your homepage as compared to Facebook. (I'm not 100…