What are the laws/requirements to operate a US based social network site or game site internationally?

[Christine M]

I am fact checking. What are the legal requirements for a US based company that offers social network and games sites and expands into international markets. Meaning, is the company required to register in each company it expands to, or, does it only pay US taxes and follow US laws since that is where it is based. Note: the site charges a user fee.
Internet QUESTION

[Mel]

if u go to europe, it depends on the individual europen country and some EU regs.
if in Asia - its still less regulated.
some countries dont have double taxation laws. but usa has it. so the profits u make in other countries are still taxable.
if u open a separate entity say, in HK, singapore, then u have to abide by their rules and pay their taxes but not usa.
many countries have double taxation rules with usa. u got to check with the treasury but u will be sent fr pillar to post. best to get an international finance lawyer