Another major challenge for e-commerce is to deal with different cultures and rules from different countries.  Ads for war toys like these are banned in Greece, but not in the U.S.  If this ad was shown on a website hosted by the U.S. and a citizen from Greece happened to find it, that citizen could file a court order to have the company in the U.S. take the image down.  The question is, does the company in the U.S. have to comply with Greek rules?