Each search engine has something called an algorithm which is the formula that each search engine uses to evaluate web pages and determine their relevance and value when crawling them for possible inclusion in their search engine. A crawler is the robot that browses all of these pages for the search engine.
Google has a comprehensive and highly developed technology, a straightforward interface and a wide-ranging array of search tools which enable the users to easily access a variety of information online.
Google users can browse the web and find information in various languages, retrieve maps, stock quotes and read news, search for a long lost friend using the phonebook listings available on Google for all of US cities and basically surf the 3 billion odd web pages on the internet!
Google boasts of having world’s largest archive of Usenet messages, dating all the way back to 1981. Google’s technology can be accessed from any conventional desktop PC as well as from various wireless platforms such as WAP and i-mode phones, handheld devices and other such Internet equipped gadgets.