http://gregartz.com/internet-marketing-strategies/introduction-to-internet-marketing/

Developing An Internet Marketing Strategy Is Essential

Internet marketing is not just throwing up a website, throwing some products on it, and then watch the money roll in. It is much more complex than that. You need to assess several factors of each market you enter into and evaluate if it's going to be profitable or not.

You need to take a look at the competition in your market and see if there is money being made online. I look at it like this, you would not build a restaurant in a neighborhood where nobody was living. That would be a waste of time and money.