In regard to social occurrence and the matter which has interest, private opinion and criticism and explanation the Web sight which is released with the type which is close to the diary. Many with the private sight, have lined up into the order where the short article is new with the time series.

Other than opinion of idea principle and the like, hobby opinion, there are personal miscellaneous notes and the reaction etc. from the reader contents, link to the Web page which becomes the original is attached to the individual article. There is a feature that it is renewed periodically, places the reaction and the like from the reader. The information originator (usually the individual) the point where what it gives an advise states is main purpose, differs from the bulletin board which designates the exchange of opinions betweenthe group of peopleas purpose.

The software which makesthe renewaland management of the Web sight which is called Blogger in around 1999 simple appeared, with this focusing on America started spreading explosively. And that weblog (mind of the log of Web), or omitting that, blog (weblog we blog= we when it does, read the journal type sight which the individual dispatches after 2000, in America changed theory is) with reached the point where it is called. In addition, thing of the information originator

blog is observed as journalism expedient of personal level or means forming of the community which designates sense of value and opinion as the center. It assumes that among America those which are written with opinion statement and journalistic point of view are many, is said that the private diary wind and entertainment ones are many. However, memorandum and the link collection etc. which do not suppose that it is read in many and unspecified persons, whether or not it is included in, opinion is divided.

That as for early it indicates to the top page in at the time of text renewal, past rearranges the text past as the log, it was something which said and has the function "of automation of text rearrangement inside the sight". After that, comment (entry of the third party other than the manager), category classification and the track/truck back of log (link notification function), ping transmission (the function which informs about renewal circumstance of and the like outside), it has reached the point where function such as RSS transmission is equipped.