People. Understand how your target audience uses technologies such as blogs and message boards. Are they spectators or creators?
Objectives. Think about your goals. Are you trying to understand your customers better, or do you want to spread a message about your product?
Strategy. This is where you figure out exactly how you’re going to reach your objectives.
Technology. Most people start with the technologybut before you get hooked on Twitter, make sure you know what you’re trying to accomplish.