Illusions

I like how you're changing your profile picture to something that commands others to act. The most interaction profile pictures usually generate is simply liking and commenting, but yours requires even more participation in order for users to even see your image. It would be interesting to see if the increased participation (shaking your head) causes people to "like" the image because they were involved in understanding the picture, or if the increased involvement needed to even view the figure will discourage people from "liking" it (if they simply scroll past it because a first glance reveals no image). Of course, it may be hard to tell why people do or do not "like" your picture; perhaps you could ask some of those who end up "liking" it why they did so. Basically, is there a limit to how much people want to interact with a profile picture?