Waterloo, Ont.-based TextNow announced Thursday former BlackBerry Inc. executive Lindsay Gibson was joining the company as chief operating officer. The company, which provides WiFi-based wireless service in the United States starting at less than $20 per month, said Gibson “will assume leadership for all TextNow operations including oversight of the entire customer experience lifecycle encompassing customer care, fulfillment, billing and IT.” Gibson spent 16 years with BlackBerry, most recently as vice-president of manufacturing and supply chain....