What’s a would-be author to do? Does he or she just Google “ghostwriter” or “book collaborator” or similar soundbites? Sure. As in all things, a personal introduction is best. But just as the family or friends blind date has gone the way of the dinosaur, (as Match.com and eHarmony.com, Tinder and other online dating sites demonstrate) more people are entrusting their books to strangers they meet online hopefully researching them well, and hoping for the best.