It's a problem mainly of ignorance. Both with regards to requiring zip and state and also with the whole liability problem. The liability issue is only a probl

It's a problem mainly of ignorance. Both with regards to requiring zip and state and also with the whole liability problem. The liability issue is only a problem for a few types of businesses, in particularly financial. You may offend or break laws (such as EU privacy laws), but it really doesn't matter if you're a US company without offices in an EU jurisdiction as they don't have jurisdiction over you, no matter what they say. It is very easy to make a signup form internationally compliant. You just have to do zip/postalcode, state/province/region. Also don't make any of the address fields required unless you need them for shipping purposes.