A blog is nothing but a journal published on the Web. It is an abbreviation of the term ‘Weblog’. Weblogs consists of short distinct entries, frequently updated and usually exhibited in reverse sequential order; so the most recent post appears first. Blogs are often the work of a single individual, although sometimes it can be created by small groups or be themed on a single subject.
The term was officially coined by Jorn Barger in 1997. The trend of weblogs escalated in 1999, when several companies and developers introduced easy blogging software and tools. Since then, till date the number of blogs has gone from a few thousand to over a 100 million.