I don’t understand why some people comment 'F4F' but never support back. If you don’t want to follow, then why say it in the first place? It doesn’t really matter whether someone follows or not, but what’s the point of doing this? What’s the benefit of not following back? Even I have more followers than many of these people, but I still make sure to follow back everyone who follows me. I respond fast and usually follow back within an hour. So if I can do it, what’s stopping you?