Beverly Hames, an owner of Fox & Fawn, a vintage boutique in Brooklyn, says that sales arising from pictures she posts free on the store’s Instagram feed, now account for 20 to 40 percent of daily revenue. On Instagram, a Bazaar Where You Least Expect It By Jenna Wortham,  March 8, 2014 Instagram, the photo-sharing app owned by Facebook, is my favorite place to skim through pictures of friends. I like to see them celebrating their birthdays, eating at lavishly decorated dinner ta