A blog (a portmanteau of the term " web log ") [ 1 ] is a type of website or part of a website. Blogs are usually maintained by an individual with regular entries of commentary, descriptions of events, or other material such as graphics or video. Entries are commonly displayed in reverse-chronological order. The term "weblog" was coined by Jorn Barger [ 3 ] on 17 December 1997. The short form, "blog," was coined by , who jokingly broke the word weblog into the phrase we blog in the sidebar of his blog Peterme.com in April or May 1999
It offers medium for interacting, creating online content, collaborating and creating a virtual community which is absent in library website which is plain. Also updating, editing website requires technical knowledge of HTML, Java etc but blogging is easy.