In this article we came to know about blog. Blogs can be used for personal and professional purpose. Blogs help to enhance opportunity to extend limits of our knowledge. It also gives information about perfect post of blog. We should pay attention to some of the principles while composing post. Post should be:

- Coherent

- Update regularly   

-Do proofreading to avoid mistakes

-Invite guest on blog to broaden scope of blog

-Grab attention by visual elements

While using multimedia in blog writer should keep in mind that images, audio and video are linked with content. Hyperlink shows that writer is using reference of other people. Eye catching title grab attention of reader.

From last five to ten years it becomes important part of online landscape. The first blog was Links.net created by Justin Hall in 1994, it referred as personal homepage.  The term “weblog” was coined after 1997. Weblog was shortened to “blog” in 1999. Blogger was started by Evan Williams and Meg Hourihan. In 1999 only 23 blogs were on internet whereas in 2006 there were 50 million blogs were created. Political blog were also created.  Version 1.o was introduced in September 2001 and first video blogs started in 2003. Blogs reach mainstream in January 2005 when 32 million Americans read Blog.  Politicians and news organizations began to use blog for reaching out to readers. In the end of 2010  152 million blogs were activated.

Microblog is also known as Tumblr. Twitter is the example of microblogging.  Here users can adjust format of their post.  Posterous was  launched in 2008 which allows user to set up a simple blog through email then submit it by email or online editor.

Blog become communication tool.  Quora provide valuable tools for bloggers which enable people to know what people want to know about topic.