Blog is short for weblog. A weblog is a journal (or newsletter) that is frequently updated and intended for general public consumption. The activity of updating a blog is "blogging" and someone who keeps a blog is a "blogger."
Blogs are typically updated daily using software that allows people with little or no technical background to update and maintain the blog. Information "published" through a blog is instantly available on a web site.
(Our rating of applications neither supports nor rejects it. It's based on how we experienced the application from our viewpoint and skill. Varying applications appeals to varying tastes. We suggest that you investigate each application yourself to verify if it meets your requirements)