When an article is written for a newspaper and published, it cannot be changed. If it is in the New York Times on a certain date, it will always be there. Even if there is erroneous information in the article, the only way to correct it after it has been printed is to write an additional article addressing the issue. On a blog, another user can comment on a particular issue, and if something needs to be corrected, it can easily be done.
Blogs are truly an interactive experience. Not only can you tell a story with text, but you can enhance it with pictures, video, and links to other websites. You can customize virtually every aspect of your blog. If you want your voice to be heard, blogging can be a great tool.