observing the development and popularity of all sorts of services based on the idea of \u200b\u200b2.0 can be concluded that the interest in literature and popular, phenomenon. Hidden (Deep) Internet ( Invisible Web, Deep Web ) probably lost out a bit from its previous scale. Information still comes naturally, but also comes to pointing meta data of interest to us, comes the tools that facilitate these searches, revealing previously unknown areas of Internet users.
It is generally believed, based on estimates by Michael K. Bergman of 2001 that the resources of the Hidden Internet is about 500 times larger than its content, which is visible (Visible Web , Surface Web ). However, as pointed out L. Derfert-Wolf and S. R. Cisek and Sapa , these estimates were discussed and challenged by others researchers. Certainly Invisible Web is still great, because they are largely those resources which are still typical search engines can not index the content (databases, library catalogs, dynamically generated pages, sites requiring registration, login, etc.). However
specific Web 2.0 tendency to cooperate in the creation of new content broadened to include processes of collecting, describing, processing and sharing of information. Internet users were, we took the typical activities of information centers. There is a growing role and scale of współopisywania, współkatalogowania and classify, what's the chance of leveling the shortcomings of search engines.
great importance to co-editing web directories by volunteers from around the world, concerned about the reliability of the information contained in them such as the DMOZ Open Directory Project: dmoz.org . Appearing on the Internet sites to allow for mutual recommending the interesting sites selected on the basis of shared bookmarks publicly, such as del.icio.us , some services allow you to discuss and evaluate individual items, such as Polish wykop.pl or Thread . com . You can Scare also share their specific news such as newsvine.com , Polish gwar.pl .
can also, more importantly for our considerations, solely to create descriptions of items and make their categorization. Allows such service CiteULike , which free tool to store, organize and share meta-information about interesting scientific articles. Service provides professional tools, such as the display option of bibliographic description in a format chosen by the user (!), A special metryczkę each record in the format BibTeX, for automatically preparing bibliographies for LaTeX users, the data also shows abstracts arykułów.
Support tools to reach high-quality materials are created by the giants in the field of search, such as Google Scholar, Google Book Search , MSN Live Search Academic , Yahoo Search Subscriptions . Libraries resources can penetrate the on-line with the position of the central directory of national, European national libraries through The European Library, and on a global scale can still look like expanding WorldCat.
to valuable web sites direct resources increasingly popular, and now in Poland, a special thematic goals ( Subject Gateways). They are a useful example and proof of marriage of modern Internet technology with the knowledge and experience built up by the library and information science for many decades. They use to organize information for a typical electronic and traditional library classifications, such as the Dewey Decimal System. At the same time their main feature is that the focus is on those most valuable (and often hidden yet at the same time) the resources associated with a given object is also created by experts in the industry. This they attribute is expressed in terms frequently used in relation to these goals, określnikach high quality or quality-controlled . Valuable also is the fact that many of these services carries the idea of \u200b\u200ballowing any interested person to 2.0 enlarging their resources (but always to preserve the quality of added records are checked and, if necessary, be supplemented). See for example U.S. lii.org , English bubl.ac.uk or Polish kinia.czytelnia.net . L. Derfert-Wolf in his articles gives examples of some hundreds of such services and projects.
phenomenon of Web 2.0 will greatly contributed to the dissemination of knowledge about the resources previously not visible. Internet is no longer a hidden fact, if the fingers of his resources indicate the community millions of users.
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