Google
Currently the most important spidering search engine, Google is dominating the search engine market. Google is an Internet search engine that ranks web pages in a list of hits by giving weight to the links that reference a specific page. It can be found at www.google.com

gTLD - Generic Top Level Domain
The top level domain represents a category, and is found at the last part of a domain name. For example the .com in www.mysite.com, is the gTLD. The three completely unrestricted gTLDs are .com .net and .org.

Guardian
An authorization and authentication] scheme developed by InterNIC that helps protect domain name records, contact records, and host records from unauthorized updates. Guardian is available free of charge and helps support secure registration transactions in an automated environment. It also provides flexible security mechanisms that can accommodate changes in organizations, personnel, and security needs.