The fee structure is both a filter against superfluous submissions and a revenue generator. Typically, the fee covers an annual subscription for one webpage, which will automatically be catalogued on a regular basis. However, some companies are experimenting with non-subscription based fee structures where purchased listings are displayed permanently. A per-click fee may also apply. Each search engine is different. Some sites allow only paid inclusion, although these have had little success. More frequently, many search engines, like Yahoo!, mix paid inclusion (per-page and per-click fee) with results from web crawling. Others, like Google (and as of 2006, Ask.com), do not let webmasters pay to be in their search engine listing (advertisements are shown separately and labeled as such).
Today, technology allows us to deliver on the purest essence of SEO. Whether via a mobile screen or a digital home assistant, our job is to ensure that our content can be discovered and served as seamlessly as possible. The addition of AI and machine learning into search algorithms means that there are no shortcuts to success; the best content starts to rise to the top over time. Search Engine Optimization (SEO)