If you are planning to start the most profitable business by using the internet today, it is best that you first generate as many and as fast as you can the names and email addresses of your target clients. In so doing, you actually create the widest and broadest market you possibly can. However, you need to know how this can be systematically done, such as building a number of lists according to different categories, so that you can effectively and efficiently manage them and in the process raise your business to the next level. This strategy of list building is effective for any type of business endeavor.