Your number one goal online is to be found more often by the consumers who want and need what you have to offer. To be found, the search robots, spiders, or crawlers need to index your website. The search bots are scanning your HTML for content, links, images, headlines, meta tags, and more. They will then combine the information they find to determine your search engine page rankings.
To have your site crawled by search robots, they need a reason to visit your website and index your web pages. The number one way to get your site indexed by the search engines is to update the content frequently and consistently. You need to be kind to the search engines by giving them what they want — fresh content, clean coding, and user friendly design.