When you place an ad for something on search engines like Google or Yahoo, you can expect to pay a lot for the service provided. People will only click your ad if they find something relevant and interesting about your products or services. You have to pay a lot of money to make your ad known to everyone so you can get more clicks and leads to your product/service. With this money-making system, you can also invite more people to join your list. Some of these benefits of search engine marketing