Without doubts, the ability of instant sharing is a bloom in media history. It allows people to express themselves and their environment in a very organic and spontaneous way. The synchronisation of the real-time activity and its digital representation make the process more attractive and artistic. Rather than designing the order, the opportunity to go spontaneously give people to be more expressive.
There are types of instant photo sharing as I experienced. I can call one type as an impulsive sharing that is used for expressing surprised, shocked. This way is based on proof presenting.

The other type is showing the experience, environment or a subject that is attractive, interesting or engaging to your story.

Another type is showing yourself in the experience.