This excerpt taken from the AMZN 10-K filed Jan 29, 2010.
Government Regulation of the Internet, E-commerce and Other Aspects of Our Business Is Evolving and Unfavorable Changes Could Harm Our Business
We are subject to general business regulations and laws, as well as regulations and laws specifically governing the Internet, e-commerce, and electronic devices. Existing and future laws and regulations may impede our growth. These regulations and laws may cover taxation, privacy, data protection, pricing, content, copyrights, distribution, mobile communications, electronic device certification, electronic waste, electronic contracts and other communications, consumer protection, the provision of online payment services, unencumbered Internet access to our services, the design and operation of websites, and the characteristics and quality of products and services. It is not clear how existing laws governing issues such as property ownership, libel, and personal privacy apply to the Internet and e-commerce. Jurisdictions may regulate consumer-to-consumer online businesses, including certain aspects of our seller programs. Unfavorable regulations and laws could diminish the demand for our products and services and increase our cost of doing business.