How does a blog differ from a traditional essay?

A weblog, which is usually shortened to a blog, is a type of web site where entries are made (such as in a journal or diary), displayed in a reverse chronological order. Blogs often provide commentary or news on a particular subject, such as food, politics, or local news; some function as more personal online diaries. A typical blog combines text, images, and links to other blogs, web pages, and other media related to its topic. Most blogs are primarily textual although many focus on photographs, videos are audio. The word blog can also be used as a verb, meaning adding an entry to a blog.