Google can be your free traffic source if you are using the right keyword to be on top No. 1.

It helps your ranking in search engines.If you want to rank high positions,you have to focus on keywords.

Every day millions of people are searching online for information about products and services. People generally look for information by using search engines such as Google, Bing or Yahoo. They type in a word or phrase that describes or defines a particular subject. This is called a keyword.
For example, if a person is looking for a dentist, they might type “dentist” or “dental care” or some other variation. If you are a dentist, you’d want to have those and other related keywords on your website.
Potential customers are telling you exactly what they want with the keywords that they enter into the search engines. The right keywords on your site will help potential customers find you when they’re searching for your products and/or services.