I prefer contract free economy.
I think the gift terms confuse people and things start to sound like some kind of commune full of hippies that will put many people off.
A contract free system simply means that no agreements are legally binding and every my do what they want at any time. Reputation and transparency combined with smart contracts drive people to honor their agreements. The key mindset is to avoid the temptation to expect recourse in the event someone fails to behave as you expected them to.
This kind of forward thinking is what makes me excited about this project. There's a lot of need to make this more clear among even this community.