BLOG:
A blog is a website where entries are written in chronological order and commonly displayed in reverse chronological order. A blog (a truncation of the expression weblog) is a discussion or informational site published on the World Wide Web consisting of discrete entries ("posts") typically displayed in reverse chronological order (the most recent post appears first).
The emergence and growth of blogs in the late 1990s coincided with the advent of web publishing tools that facilitated the posting of content by non-technical users. (Previously, a knowledge of such technologies as HTML and FTP had been required to publish content on the Web).
Blogs have become an integral part of online culture.Practically everyone reads blogs now, whether they’re “official” news blogs associated with traditional news media, topic-based blogs related to one’s work or hobbies, or blogs purely for entertainment, just about anyone you ask has at least one favorite blog.
But it wasn’t always so. Blogs have a relatively short history, even when compared with the history of the Internet itself.
The term "weblog" was coined by Jorn Barger in December 1997. The shorter version, "blog," was coined by Peter Merholz, who, in April or May of 1999, broke the word weblog into the phrase "we blog" in the sidebar of his weblog.