Hey Kevin, thanks for the reply, and forgive me for not thanking you for this plugin in my first post
So thank you!
I am still figuring my way around your plugin, being hecticly busy figuring a user based system where listing-owners have page specific access to only their listings and nextgen image galleries… My head is smoking, I am unfortunately not as code savvy as you, and many others are… I am learning though, slowly but surely…
You are right, I did mean to say that Role Scoper uses "display_name" vs "username", and this is evident where-ever there are options to apply user specific measures.
And yes, it is true that this problem is amplified by the fact that the blog is configured to use the users first name as "display_name". An added last name would surely make it more unique, but still the possibility of duplicates exist…
I am using the Cimy User Extra Fields plugin, which allows users to also supply their first and last names at registration (I don't have any real users though at this point, only test users that I have created). So the last names are definitely recorded. It seems to me though that WordPress uses the users "first name" as default when it comes to assigning a "display_name" - that is until one changes it manually…
Or is there a setting in WordPress whereby I could default the "display_name" to being the unique username?