The article offers information on Quora.com, an online question-and-answer service reminiscent of reference. Librarians providing virtual reference might want to monitor Quora informally, just to see what kinds of questions emerge and whether they might be questions from a local population.
Ovadia, Steven. "Quora.Com: Another Place For Users To Ask Questions." Behavioral & Social Sciences Librarian 30.3 (2011): 176-180.