There are websites that not only provide us with information, butcan add and edit it. Such projects are developed with great speedand very quickly turn into a huge base of knowledge to which dailytreat people looking for information on the web. One of the most ambitious projects is considered to Wikipedia(http://wikipedia.org/), based on Web 2.0 technology and has manylanguage localizations (Russian http://ru.wikipedia.org/). Itorganized its own search mechanism to quickly and easily find the right article for future essays or research papers. Based on the SOFTWARE package Wikipedia, created the so-called engine wiki, allowing other projects to create their ownonline Knowledge Base, that allows to replenish the World Wide Web, and important information necessary to fill the niche leftlayers of information online.