ATLANTA — Sandy Corsert, a 50-year-old paralegal from Washington Park, has succombed to viral marketing, according to a family friend. Corsert was a lifelong resident of Washington Park and was in the first graduating class of Benjamin E. Mays High School. Ms. Corsert had contracted viral marketing several years ago but she didn’t admit it and she refused treatment, say family members. Among other outward signs of the disease, she would forward by email phoney news articles about a miracle diet to lose cellulite. On Facebook, she invited friends to like the pages of companies selling things like survival seeds, positive-energy bracelets and herbal remedies for erectile dysfunction. Just before she lost her fight to the illness, Corsert invited hundreds of people to download an app to join her in playing Pizza Parlor — an app designed by the chain restaurant Papa John’s. Services will be held at Chapman’s Funeral Home on Friday, October 11 at 10:00 a.m.