YouTube is often considered a blog, as the site allows users to upload and share videos, with accompanying text and comments, which can then be viewed by other users. However, YouTube does have some key differences from blogs. For one, YouTube is a platform where users can upload and share videos of all lengths, while blogs are typically limited to shorter pieces. Additionally, while blogs are typically edited by a single author, videos on YouTube can be shared and voted on by others, which can give them a more democratic feel.
However, despite these differences, many bloggers use YouTube to share their work with a wider audience. As such, YouTube is generally considered a form of blogging.