Where SEM is an acronyms of Search Engine Marketing and which is the fastest, most powerful, highly-targeted, most dynamic, highly-measurable and most cost-effective marketing strategy that can give your business the power to reach potential customers anywhere in the world. Search Engine Marketing or SEM is about making sure that your Web site appears on the top 20 of search results every time potential customers search for whatever products and/or services that you offer on any of the major Search Engines including Google, Yahoo and MSN. So Search engine marketing is an alternative to traditional marketing such as commercials, brochures, and print advertising.