That sounds like a minefield. How do you regulate a service where two people from different countries can interact? Which countriy's law should be followed when

That sounds like a minefield. How do you regulate a service where two people from different countries can interact? Which countriy's law should be followed when a person from country Y posts on a feed from country X? What if the laws contradict eachother? Multinationals had to deal with multiple regulations before, but most time that was solved by using the visitor's residency, but that might not be so clear cut when we are talking about social networks.