A blog, short for "web log," is an online journal or informational website displaying information in reverse chronological order, with the latest posts appearing first. It is a platform where a writer or even a group of writers share their views on an individual subject. In its traditional form, a blog can be viewed as an online diary where authors record and reflect upon events and experiences in their lives. However, modern blogs cover a wide range of subjects and formats, including news, cultural commentary, recipes, fashion advice, personal journals, and more.

Blogs often provide commentary or news on a particular subject, such as food, politics, or local news. Other blogs function more like online diaries, or contain lists of web links, photos, videos, and other media. Blogging has evolved from a niche activity enjoyed by a relatively small number of people to a mainstream phenomenon, largely because of its social nature and the ease with which anyone can create and publish content on the Internet.

The process of adding an article to a blog is called blogging. People who maintain a blog are referred to as bloggers. Blogs are typically updated frequently, sometimes even multiple times per day. Many blogs offer subscription options that allow readers to receive automatic updates when new content is published. This feature makes it easy for readers to stay informed about the topics they're interested in without having to visit the blog manually every time.

In summary, a blog is a versatile digital medium that empowers individuals to express themselves, share knowledge, and engage with others around shared interests or passions. Its evolution reflects the broader changes in how we consume and interact with information in the digital age.