This is very cool, and makes me curious about how many places there are already which accept ZEN for payments. Is there any list of restaurants, bars, and other businesses accepting ZEN?
I could be wrong, but my guess is a lot of the places and countries that currently accept ZEN won't be in places like Western Europe and usa. The tax man always wants to have their cut and I'm not sure direct payments of ZEN for coffee food etc will be something regulators support.
Then again, it could be like cash where the business owner just needs to report it. For example, $X worth of food sold for $X worth of ZEN.