* Approval. Snapping is often a way to show approval or appreciation for the poet's work. It is a way of saying, "I like what you're doing."
* Encouragement. Snapping can also be a way to encourage the poet to continue. It can be a way of saying, "Keep going! I'm with you."
* Rhythm. Snapping can also help to create a rhythm or beat during the poetry reading. It can help to add momentum and energy to the performance.
* Spontaneity. Snapping can also add an element of spontaneity to a poetry reading. It can help to break up the monotony of a reading and make it more interactive.