This is a very interesting thread. I recently set up a twitter and instagram account. I have no idea what to do with IG but Twitter has been nice to me so far. Nice in the sense that I've found the writing community there to be receptive. I am not about gaining huge numbers of followers but I do know that having a social presence matters. I am introverted by nature and have a hard time talking about myself or what I am working on but I do enjoy having the ability to respond to something someone said and retreat when I need to (by retreat I mean simply closing the laptop).