What is a WWW robot?

A robot is a program that automatically traverses the Web's hypertext structure by retrieving a document, and recursively retrieving all documents that are referenced.Note that "recursive" here doesn't limit the definition to any specific traversal algorithm; even if a robot applies some heuristic to the selection and order of documents to visit and spaces out requests over a long space of time, it is still a robot.

Normal Web browsers are not robots, because they are operated by a human, and don't automatically retrieve referenced documents (other than inline images).

Web robots are sometimes referred to as Web Wanderers, Web Crawlers, or Spiders. These names are a bit misleading as they give the impression the software itself moves between sites like a virus; this not the case, a robot simply visits sites by requesting documents from them.

source  http://www.robotstxt.org/wc/faq.html#what

The Definition of an Index

 The collection of information a search enginehas that searchers can query against.With crawler-based search engines, theindex is typically copies of all the webpagesthey have found from crawling theweb. With human-powered directories,the index contains the summaries of allwebsites that have been categorized.

What are Directories?

Directories are a type of search engine where listings aregathered by human efforts ratherthan by automated crawling of the web. Indirectories, websites are often reviewedand summarized in about 25 to 30 words and

placed in a particular category.

What is link popularity?

Link popularity is the total number of web sites which link to a particular site. Most search engines use link popularity as a factor in determining the search engine ranking or importance of a web site.

Very good keyword tools

When trying to find the best keywords for your website try using these tools.

http://www.wordtracker.com

http://inventory.overture.com 

http://goodkeywords.com 

http://www.adwordanalyzer.com

Bryan 

TheSeoTeam.com

Thank you for visiting my blog. I hope that the information that I post is educational and beneficial to all who stop by and read it.

Bryan 

What is SEO?

SEO is short for Search Engine Optimization which is the process of altering a website to achieve a higher listing or placement on the organic or natural side of search engines.

Bryan