A blog is when somebody puts a blog up about news and you can share information on stuff.
Anyone can create a blog using wordpress.com.
Blog posts are what contain news and is on media.
Blogs are about sharing personal information about yourself.
The advantages are being able to talk to people online and learn more about someone by blogging and the disadvantages are cyber bullying going on in the comments and it is also a disadvantage because anyone can look at the blog even they are someone you don’t want to look at it.