One of the ideas that we discussed on Wednesday was reciprocity -- the idea that if you give someone something they will feel obligated to respond in kind.
So I'm wondering, when someone likes you on Instagram or Facebook, what do you do? Do you like them back? Why? And what does it mean if you do?
What about following them? Again, are you obligated to do so if they have started following you?
Finally, is your behavior any different for brands versus people? Do you follow any brands on social media? Why? Do you "like" them? What do you expect in return?