“Blog” is the short form or say “abbreviated version” of the term “Weblog”.
Blogs are the special part of the Internet which are used to express personal views or to say something or to update the customer about the companies products or helping others .
In a simple manner blogs are the special type of websites which are used to tell the others about your self or the information that you have with you .
‘A blog is a website in which items are posted on a regular basis and displayed in reverse chronological order. The term blog is a shortened form of weblog or web log. Authoring a blog, maintaining a blog or adding an article to an existing blog is called “blogging”. Individual articles on a blog are called “blog posts,” “posts” or “entries”. A person who posts these entries is called a “blogger”. A blog comprises text, hypertext, images, and links (to other web pages and to video, audio and other files). Blogs use a conversational style of documentation. Often blogs focus on a particular “area of interest”, such as Washington, D.C.’s political goings-on. Some blogs discuss personal experiences.’
–Words from Wikipedia.
some may have photoblogs which consists of photographs or some infoblogs which gives us the information from the world.
There are many companies which provides free blogging service like
www.blogger.com
www.blog.com
www.wordpress.org
www.typepad.com