The format of social media is great.  It would be like an online discussion or bulleti board.  I would like to have students take videos of each other explaining a problem.  This is the modern version of “going to the board”.  The pressure, of having others observe you in the public, is a strong motivator.  I heard students say when being videotaped, “I got to get this right.” My only regret is all the “bad stuff” on some of the social media sites.  There needs to be site just for educational items