The best method is to choose SEO expert in your home town with a great reputation. You can then go into the office and meet with the people who will be managing your on-line presence. Therefore it is possible to actually understand more about the process and the methods they actually use. Compare a few companies and a few experts to gather the common advice that they have. Again, being a good business man, you will need to gather an understanding of general practices before you get started with a company.
Another great method of choosing a firm to manage your Internet Marketing is to ask your mentors or business partners if they have successfully used a company for an extended period. There are optimization companies often located in large cities and small towns alike. A proper set up company will probably offer a better service and get you better results that other purely on-line based companies. It has only been in the last one to two decades that SEO companies have even existed. Since the start of the information age, there has been an ever-increasing need for your business to be on-line. To beat your competitors and for the constant growth of your business, you need such companies to get extra customers through the Internet. The Information age has just begun and there will be an ever increasing need for optimization of your web content.