A blog (a truncation of "weblog") is a discussion or informational website published on the World Wide Web consisting of discrete, often informal diary-style text entries (posts). Most blogs show posts in reverse chronological order, with the most current post appearing at the top of the web page and all previous posts appearing below it. Blogs were often the product of a single individual, or sometimes a small group of people, and they typically addressed a particular subject or theme. That changed in 2009. Several author blogs (MABs) began to appear in the early 2010s, including the work of multiple writers and occasionally being edited by a professional. An growing amount of blog traffic is being generated by MABs from newspapers, other media sources, universities, think tanks, advocacy organisations, and other comparable institutions. The emergence of Twitter and other "microblogging" platforms has aided in the integration of MABs and single-author blogs into the mainstream news media environment. It is possible to use the word blog as a verb, which means to maintain or contribute new material to a website or blog.
The birth and expansion of blogs in the late 1990s coincided with the introduction of online publishing tools that made it easier for non-technical users who did not have any expertise with HTML or computer programming to submit material. It was previously necessary to be familiar with technologies such as HTML and File Transfer Protocol in order to post material on the Web, and early Internet users tended to be hackers and computer aficionados. Most websites in the 2010s are interactive Web 2.0 websites, which enable users to make online comments, and it is this interaction that differentiates them from other static websites in the same year. Thus, blogging may be considered a kind of social networking service in this context. As a matter of fact, bloggers not only create material for their blogs, but they also often engage in social interactions with their readers and other bloggers. However, there are blogs with a large number of readers that do not allow comments.
It is increasingly commonplace to refer to content production and sharing on social media as "blogging," particularly when the material is lengthy and one produces and distributes information on a regular basis, as opposed to "blogging" or "blogging." As an example, someone might be writing a blog on Facebook or blogging on Instagram.
On February 16, 2011, there were more than 156 million publicly accessible blogs in use worldwide. Worldwide, there were about 172 million Tumblr blogs and 75.8 million WordPress blogs in existence as of February 20th, 2014. In the opinion of many reviewers and other bloggers, Blogger is the most widely utilised blogging service available today. Blogger, on the other hand, does not provide public data. As of February 22, 2014, Technorati has 1.3 million blogs in its database.