This design features the idea of the amplification wave with the upward deflection. This denoting a positive signal for content created by the users.

It also doubles up as an arrow pointing upwards. This is to denote optimism and growth.

In addition to this, to two separate parts are shaped in such a way as to symbolically convey content being passed from one hand to another. An exchange is occurring.

The tail on the left side helps convey movement and reinforce the idea of a speedy service.

The overall curves of the design makes it more friendly and accessible.

Colour choices are warmer and inviting, but can easily be tweaked.

The simple design should work well for an icon on the web and app.