This dialog provides the ability for anyone to create a web-log (Blog) on any subject, or to respond to posted Blogs.`
You get to this dialog by selecting the tab on the home page of the site.
Although anyone can post a Blog if you are not logged on as a registered contributor to the site you will be required to enter your e-mail address, and that e-mail address will be exposed to anyone who views your Blogs. Also if you are logged on as a registered contributor, you can edit your Blogs after they are posted.
To demonstrate this, I deliberately entered one of the sample Blogs using a different e-mail address to the one registered for my own account.
For any other issue click on the "Contact Author" hyperlink in the page footer.
To create a new top-level Blog click on the New Post link.
To view a post click on the title hyperlink. This takes you to a page for viewing an updating a Blog.