In this world of social networks your profile image will represent the first impression that others will receive from you. Then we can intuit that it is very important.

This should reflect a lot of who you are (or what you appear to be).

This is the problem, we can not define a person by his profile image. This can say a lot, but in reality it does not represent anything. It's just a farce. Unfortunately, that's the way it is.

As my friend @wakeupkitty said, to make me a concept of someone, I prefer to read their work. So I can have an idea of who this person is and his way of thinking.