“Wikipedia has come a long way since it started in 2001. With around 70,000 volunteers editing in over 100 languages, it is by far the world’s most popular reference site. Its future is also uncertain. One of the biggest threats it faces is the rise of smartphones as the dominant personal computing device. ... The pool of potential Wikipedia editors could dry up as the number of mobile users keeps growing; it’s simply too hard to manipulate complex code on a tiny screen.”