It often happens that we use a number of terms for which we do not know its exact meaning. Generally we handle us more by approximations than by certainties. But to be able to delve into the world of Internet Marketing it is essential to start by learning its meaning in a specific way. It is very easy to understand this concept to imagine Internet access to a huge network of computers worldwide interconnected through which people can receive and send unlimited and diverse information. When such information is a message planned and oriented to achieve certain promotional effect, we are doing Internet Marketing. Internet Marketing or Internet marketing is exactly the same, they are different ways of calling a series of techniques that allow us to make promotion en masse, to reach around the world without the need to move house. A commercial project on the Internet, also known as e-commerce, requires the election of a good product, an automated system of prospecting and follow-up with a steady flow of traffic to the target web site. The key to the success or failure of a project of Internet Marketing, will depend on the knowledge and the domination of the techniques and tools allowing to generate a permanent flow of qualified to web site traffic. Businesses on the Internet are a numbers game based on quality and quantity in the variables. Without traffic there is no sales, and without sales there is no profit!