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.

Combining Email Marketing with Other Types of Marketing
Whether you choose to do your marketing online or offline, one thing does not change. This is the concept that no single marketing strategy will be as effective as a combination of two or more marketing strategies.