What is the SERP ?

[Venktesh]

A search engine results page (SERP) is the list of results that a search engine returns in response to a specific word or phrase query. Each listing includes the linked Web page title, the linked page URL (Uniform Resource Locator), a brief description of the page content and, in some cases, links to points of interest within the website.

There are three main types of results on a SERP-
1. Pages that the search engine spider has crawled and indexed.
2. pages that have been manually added to the search engine's directory.
3. pages that appear as a result of paid inclusion.
The highest-ranking hits generally link to the most useful information; links grow less relevant as they move farther down the list.