I learned a few things about profile pictures and the people I am friends with, at the very least.  I was more likely to get likes and comments after 12 p.m. and before 10 p.m than in the morning or late evening.  I feel that that may be one explanation for why pictures of myself garnered little to no reaction.  Oddly enough fruit garnered a lot of attention, as did cute animals and memes.  I think if I really want a reaction from the people that I friend I will have to post a really weird meme to get a reaction.  Perhaps next time I should try seeing what posting pictures exclusively of myself would do, instead of using mostly images of objects and scenes, or at least keep to a theme, instead of posting whatever picture a random person says.