The natural and unpaid results users receive after making search queries. Search engines, which crawl your web pages and rank your content for relevance to the most common queries, determine these results. You can improve your ranking through search engine optimization (SEO) activities, such as including keywords in headlines. For contrast, see: paid search.

The 3 Things To Avoid When Emailing Your List
When you decide to have an opt-in list, it is not just a matter of sending your subscribers your promotional newsletters or catalogs.