You presumably have some evidence that posting a picture to Instagram gives you such a hit, while posting an article to your blog does not. Or at the very least

You presumably have some evidence that posting a picture to Instagram gives you such a hit, while posting an article to your blog does not. Or at the very least you have some reason to believe this. Could you show it to me? It's going to need to be pretty strong evidence to convince me that blogging, a medium where some posts get a lot of feedback, others a little, and still others none at all, is a system without a variable schedule of rewards.