There are many issues to consider when thinking about regulation on the internet. To begin with should the internet be regulate at all. Acording to the "Declaration of Independence of Cyberspace" by John Perry Barlow, the internet should be left alone by the government. According to him the people on the net will regulate it themselves. Other topics to consider is the regulation of file-sharing. Lastly what is the effect on innovation if the internet is left unregulated, or if it is regulated too much? These questions and more are important when discussing regulation of Markets on the internet.
Link to arugments for and against regulation of Markets on the Internet.
One outside source from Ebay in the UK gave information reguarding Ebay UK's policies on what is permitted to be listed. Some of the Prohibited items are as follows: