A blog is an online discussion or personal website published via the World Wide Web, usually containing informal, often personalized diary-style text posts. Posts are normally displayed in reverse chronological order, hence, the latest post appearing first, at the head of the page. Blogs can contain images, audio, video or even links (which serve as internal or external links to external web sites). In recent years, blogging has become a popular form of communication and a platform for public debate on matters of public interest. Bloggers use blogs to share gossip and rumors; to express political views; to engage in debates with other bloggers; and to perform marketing tasks such as attracting sponsors and readers.
Blogging is popular not only because it allows people to interact and share their thoughts, but also because it can be a very good medium to earn money through internet advertising. Unlike traditional media, blogging does not have to be replicated elsewhere, allowing a blogger to build up a large following without the need to advertise elsewhere. Moreover, unlike conventional advertisements, which only reach the targeted audience, blogging allows a blogger to reach an international audience through advertisements that are spread across the internet. Bloggers can use search engine optimization (SEO) techniques to make their blogs more visible to users of search engines, thereby earning more traffic and potentially earning more money.
A blog offers several distinct advantages over traditional websites. A blog can capture a large number of audiences by offering timely and relevant information. It also offers a way to communicate directly with a large audience, providing immediate feedback. Finally, a blog offers the advantage of being easy to update, since users can easily locate the latest posts on any particular subject by searching for specific keywords.