I simply mean that I'm not looking to obscure my login as a form of strengthening password security. That's why I put "security" in quotes a few messages up.

For sites that have user names it means being able to have a display name of your choice without "larry36362" being your display name.

It means being able to have email addresses used expressly for login purposes without needing to worry about actually receiving email at the same address and mixing with other email that has a specific content/purpose.

It's a convenience/management thing more than it is added security. It's just however that it's tied to the security mechanisms of sites, because it's part of the entry method. I just read that link and it seems that some other people are of a similar frame of mind with regards to management.

Besides, someone should tell Batman that obscurity doesn't add value.