(SEO) is the process of improving the amount or the quality of traffic to a website from search engines such as Google, Yahoo and Aol via "natural" ("organic" or "algorithmic") search results. Typically, the earlier a site appears in the search results list, the more visitors it will receive from the search engine. SEO may target different kinds of search, including image search, geo targeted search, and industry-specific vertical search engines and directories. This gives a web site more presence which in turn typically generates more revenue. Read More

Search engine marketing, or SEM, is a form of Internet marketing that seeks to promote websites by increasing their visibility in search engine result pages (SERPs) through the use of paid placement, contextual advertising, and paid inclusion. The industry peak body Search Engine Marketing Professional Organization (SEMPO), includes search engine optimization (SEO) within its reporting, and SEO is also included in the industry definitions of SEM by Forrester Research, eMarketer, Search Engine Watch, and industry expert Danny Sullivan. The New York Times defines SEM as 'the practice of buying paid search listings'. Read More

Pay per click (PPC) is an Internet advertising model used on search engines, advertising networks, and content sites, such as blogs, in which advertisers pay their host only when their ad is clicked. With search engines, advertisers typically bid on keyword phrases relevant to their target market. Content sites commonly charge a fixed price per click rather than use a bidding system. Websites that utilize PPC ads will display an advertisement when a keyword query matches an advertiser's keyword list, or when a content site displays relevant content. Read More.