By Gastón Gertner Back in 2010, as an Argentine attending grad school in the United States, a close friend of mine introduced me to the free text-messaging service called WhatsApp. There was only a handful of us who used it on campus. Most of my American fellow students just used regular text messages, but for me, WhatsApp offered a free way of staying in touch with my … [Read more...] about WhatsApp: A tool for development work in Bolivia