What do you think about that idea?
I think it's an excellent illustration of Nano's strengths. Being feeless makes it very suitable for use-cases that involve microtransactions (say, tipping or gaming for fractions of a cent). Traditional payment systems could have a minimum send amount and/or a flat fee which would make microtransactions untenable.
The other approach would be to track a user's earned balance server side and not pay out until they reach a minimum amount due to aforementioned fees.