Knowledge is, on the one hand, the State of anyone who knows or knows something, and on the other hand, the known or known contents that are part of the cultural heritage of humanity. Sciences constitute one of the main types of knowledge since they are the result of systematic research efforts for concrete answers to problems and whose decision seeks to provide adequate representation of certain aspects. In general there are many types of knowledge that, without being scientific, do not cease to be adapted to its purposes: know-how in crafts, learn to sing, etc; knowledge of the language, traditions, legends, customs, or ideas of a culture; the knowledge that people have in their history, or even common to a society knowledge given, even to mankind and consequently always there is something to learn and discover. Even when information is generated at each moment, is that the amount of human knowledge is finite, not to mention the inaccessibility of solving fundamental problems or mysteries, such as the of life, of human language or origin of the universe among others that encompass different edges and complexities. With the rise of civilizations, the accumulation and dissemination of knowledge are multiplying through writing.
Over time, humankind has developed a variety of techniques designed to preserve, transmit and develop knowledge, such as school, encyclopedias, newspapers, computers or other mobile devices. In contemporary societies, diffusion or on the contrary, knowledge retention, has an important political and economic role, all this contributes to making knowledge a power source. This gives particular importance to the sources of knowledge, such as the mass media and their vehicles, such as the Internet. In this sense is of great convenience for today more than ever with reliable spaces for the learning of new knowledge that will help its disclosure in a clear and timely manner in this way blogs represent a great potential for achieving channel This goal already which currently enjoyed great acceptance, dissemination and are in some cases reliable sources of access to knowledge.