Blogging is the act of posting content on a blog (a Web log or online journal) or posting comments on someone else's blog.
Why Blogging is so popular
Blogging is very popular today because it allows people to interact with each other. Blogging has also become a popular search engine optimization (SEO) tool because search engines like Google and Yahoo know that a blog is frequently updated with content or visitor comments, so their spiders visit blogs frequently looking for new content to include in their index.
Additionally, blog content can be delivered automatically via electronic RSS (Really Simple Syndication) data feeds. Visitors subscribe to a blog's feeds in order to stay up to date with content that's being posted on subjects that interest them. Blog feeds are then read by what's known as blog feed reader software, widely available for free, so users can scan for recent blog posts of interest on the blogs to which they subscribe.
Finally, blogging doesn't require that writers and contributors know a lot about HTML (Web page code). If a blogger or visitor can fill in an online form, they can blog and post comments on other blogs.
Examples:
The About Home Business home page content is a perfect example of blogging. Each posting written by me is dated and presented in chronological order. Each post has a link visitors can use to post their own comments. When I write and publish these posts using blogging software, I am blogging. When my visitors click the link and leave a comment, in a sense, they too are blogging because they are interacting with my blog.
The advantages or importance of blogging:
Increases Knowledge
Blogs are a great source of knowledge. Today, so many blogs are available on the internet and you can find any information related to any topic within few minutes. There are many blogs which provide all the updated information at one place; like some technical blogs which provide all the latest technological information or all latest gadgets available in the market.
Improves Writing Skills
Writing for blogs on regular basis improves the writing skills, which is 100% true. As there is a saying that “Practice makes the man perfect” so continuously writing for blogs will improve your writing skills and also knowledge.
Money
Every internet users know that blogs are a real source of money. Today many people earn a huge amount of money through their blogs, that is, by writing articles, by promoting or selling products or ads or by offering their services. Moreover, there are so many other ways by using which one can make money through blogs.
Social Media
Blogs are the best place to communicate with different people about different topics. Every online user can connect with even unknown person through blogs by sharing knowledge, providing new and updated information, discussing on the common topics etc. In brief, today blogs play an important place where different people from different places are able to interact with each other on daily basis.
Solution Provider
Bloggers used to help each other to provide required information. They also provide solutions to people who have some queries and need suggestions.
Getting Popularity
Nowadays, blogs are the best way of increasing popularity on the web and promoting yourself. If you have a blog then initially do work hard on it and make it of high level then as people will start to know you, you will be popular among bloggers. It will give you a great sense of achievement.
Furthermore, to conclude ‘Blogging’ is coined from the term “web log”. It has many advantages associated with it as discussed above. It has been approved as one the powerful seo technique.

BLOG IS a small Website where you can post so many thing on it.......................................................