eCommerce (also known as 'electronic commerce') refers to business conducted online. At one time, the term included only web businesses such as Amazon and Travelocity that transferred a real world paradigm – buying books or booking flights -- to the Web. But heading into the second decade of the 21st Century, practically all business is conducted online in some way and eCommerce includes a wide range of subject matter, whether it’s downloading an app, clicking on an adword at a blog, licensing content from iStockphoto, or purchasing a legal form. In fact it's hard to imagine a business without some eCommerce element. In this section we look at all of the legal issues affecting eCommerce 2.0.