Explanation:

Blogging refers to writing, photography, and other media that's self-published online. Blogging started as an opportunity for individuals to write diary-style entries, but it has since been incorporated into websites for many businesses. The hallmarks of blogging include frequent updates, informal language, and opportunities for readers to engage and start a conversation.
The word blog is actually a shortened form of its original name, "weblog." These weblogs allowed early internet users to "log" the details of their day in diary-style entries. Blogs often allow readers to comment, so as they became more common, communities sprung up around popular blogs.