WWW - system for work with the hypertext. Potentially it is the most powerful tool of search. The hypertext connects various documents on the basis of in advance set mere verbiage. For example, when the new word or concept occurs in the text, the system working with the hypertext gives the chance to pass to other document in which this word or concept is considered in more detail.
Whether it is worth saying that as soon as there was an opportunity to unite some cars in a network, users grabbed at this chance not only to use resources of remote cars but also to expand a circle of the communication. The programs intended for an exchange of messages of the users who are by different cars are created. Because of a variety of computers, operating systems, ways of connection of cars in a network is also more whole,
News - receiving network news and electronic bulletin boards of a network and possibility of the placement of information on network bulletin boards. Electronic bulletin boards of the Internet network are formed on subject. The user can subscribe at the choice for any groups of news.
At the low cost of services (it is frequent only the fixed monthly payment for the used lines or phone) users can get access to commercial and noncommercial information services of the USA, Canada, Australia and many European countries. It is possible to find information in archives of a free access of the Internet network practically on all spheres of human activity, since new discoveries to a weather forecast for tomorrow.
The user in return can involve possibility of WWW to work with the hypertext for communication between the data and data of WAIS and WWW so that own records of the user were as if integrated into information for the general access. Actually it, of course, does not occur, but it is perceived quite so.
WAIS - even more powerful tool of obtaining information, than Gopher as it carries out search of keywords in all texts of documents. Inquiries are sent to WAIS in the simplified English. It is much easier, than to formulate them in language of algebra of logic, and it does WAIS more attractive to users nonprofessionals.
The companies speed, cheap global communication, convenience to carrying out collaborations, available programs, a unique database of the Internet network tempt. They consider a global network as addition to own local to networks.