Yep, but it's still a misfeature. I set up a firstname.lastname account for someone. On other services (e.g. iTunes) they've used that combo with and without

Yep, but it's still a misfeature. I set up a firstname.lastname account for someone. On other services (e.g. iTunes) they've used that combo with and without dots. It's a nightmare trying to help them with password resets. They're not an internet-savvy individual.