What is a BLOG Actually !!!

The term blog formally entered America's vernacular when it was inaugurated into the printed pages of the Merriam-Webster Dictionary in 2005. In fact, the word was at the top of Merriam-Webster's list of "words of the year" in 2004, a testament to its ever-increasing popularity. But what exactly is a blog?
The term blog is actually a blending of the words web and log. Over time the two words combined to become weblog, and eventually simply blog. A blog is defined in the dictionary as "a Web site that contains an online personal journal with reflections, comments, and often hyperlinks provided by the writer."
In simplest terms, a blog is bit like an online diary. But instead of recording thoughts in a locked book, the writer posts his or her musings on the World Wide Web, with the possibility - and hope - that readers across the globe will take a look at what they have to say.