What is electric commerce?
Electric commerce or e-commerce is the interchange of goods over the internet.

Examples of e-commerce:
e-Bay

videos:
http://youtube.com/watch?v=LW4X3b_j0eE&mode=related&search=

http://youtube.com/watch?v=a0YdbwHQYUM&mode=related&search=

http://youtube.com/watch?v=HYokLWfqbaU