Social media helps drive historic Cuban exodus to U.S.
As summer began to bake the central Cuban city of Sancti Spiritus, Elio Alvarez and Lideisy Hernandez sold their tiny apartment and everything in it for $5,000 and joined the largest migration from their homeland in decades. Buying two smartphones for $160 apiece on a layover on their way to Ecuador, they plugged themselves into a highly organized, well-funded and increasingly successful home-brewed effort to make human traffickers obsolete by using smartphones and messaging apps on much of the 3,400-mile…