To be straight forward enough in the context, you do not really need to think so. These days, at a quite rapid rate the majority of search engines develop and rise by following links. So here is the simple formula for you - a single inbound link from any page that is already indexed will provide a great identity to your page or the search engine. For example, if there are links to other pages in your indexed website, then other pages will be indexed as well.

So this process continues to get web pages and websites inbound indexed for the profit and SEO needs of any business.

Though this is not the sole reason that makes inbound linking important, there are several others too. Another very important aspect of search engine optimization is back-links. Acquiring backlinks is much needed and of related significance for any website. Now, these backlinks have much to do with the google page rank algorithm.

How?

Usually, a website owner doesn't search or hunt for links. When there's a good, useful and appropriate content, naturally enough he links it right away i.e. he links to the information. This is where the Google Page Rank algorithm begins.

Furthermore, submitting your website to the search engines can't be regarded as low, you'd fall for no loss in such cases. Additionally, once you've made your submission to a major group or association, your job is done quickly and professionally. However, submissions do cost a fee unless they're submitted to Google, Yahoo, MSN etc.