Hi there! I'm Maple, and I hope I didn't snag this username from anyone else because I was so surprised to see it not taken when I registered.
Since I've seen this concern mentioned
twice today, I've run an actual
test to confirm my understanding. The registration form
does block people from using a username that is already registered.
(As opposed to Disqus, where you can get your actual ID from them
or a number of 3rd party ID systems, which means that the uniqueness of any IDs is limited to that provider in the first place, and
then you get to choose whatever
screen name you like, including the possibility to duplicate someone else's. Which is one (of several) important reason why I'm still posting as a guest, instead of using an account: I
have been impersonated in the comments, but switching to an account doesn't provide a
iota more protection against that happening.)
(... aaaand welcome to all the newcomers, of course. Sorry, I'm not the type to whack y'all with the Welcome Bell
individually. )