Knowledge is, first, the state of one who knows or knows something, and secondly, the contents known or known as part of the cultural heritage of humanity. The sciences are one of the main types of knowledge as they are the result of systematic research efforts in search of answers to concrete problems whose resolution seeks to provide an adequate representation of certain aspects. In general there are many types of knowledge that, without being scientists, they are no longer adapted to their purposes: the craft know-how, knowledge, singing, etc., the knowledge of the language, traditions, legends, customs and ideas of a culture, the knowledge that people have in their history, or even common knowledge to any society, even mankind and therefore there is always something to discover. Even when information is generated each time, one can say that the amount of human knowledge is finite, in addition to the inaccessibility of solving the fundamental problems or mysteries as the origin of life, human language or other encompassing universe from different angles and complexities. With the rise of civilizations, the accumulation and dissemination of knowledge are multiplied by means of writing.

Over time, humanity 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, dissemination or conversely, the retention of knowledge, has an important political and economic role, all contribute to making knowledge a source of power. This gives a particular importance to the sources of knowledge, mass media and their vehicles, such as the Internet. In this regard it is of great convenience to have more than ever with reliable spaces for the new knowledge to help its disclosure in a clear and timely, in that way blogs are a channel of great potential for achieving the goal as they enjoy now wide acceptance, dissemination and in some cases are reliable sources of access to knowledge.