Anonymous messages are fine, user names are useful if you plan to create multiple messages as they allow readers to place your messages in context.
If you want to post comments or feedback or ask questions you can post anonymously or create a user name.
If you create a user name then you need to specify a username and a password, no email address, this means that there is no account created and no need to wait for a confirmation email.
This approach avoids putting a barrier in the way of a useful "passer by's" contribution.
As all comments are moderated prior to being displayed this set up and confirmation process which is not necessary.
There are a couple of places on this site where you can create a user name but they all end up in the same database and are used bu all the messages and comments sections in this site.
Please note that we have no way of reminding you of what your password is if you forget it.