Search Engine Optimization (SEO) is the best way to drive traffic to your website for free. Not only is it free, it is the best kind of traffic (targeted). Targeted traffic is best because it is actually going to send you people who are looking for what you have. This is based on your keywords. ‘Keywords’ are relevant phrases that define what your site is about exactly.
The Search Engine robots crawl websites on a regular basis, usually every 30-days unless there is activity (fresh content). When they crawl a site that appears to be dormant, (nothing fresh, no traffic, etc.) then they just leave and come back next time. However if they see that the site has fresh content they will re-index the site. The index is their database of all the websites on the Internet.
When your site is re-indexed, that means that your link is promoted to a higher position in