Site such as devforum.roblox.com, You automaticaly login or register from there main site roblox.com, How exactly would I do that?
「いいね！」 1
They’re using single sign-on. sso
Do you have a site with an existing userbase?
「いいね！」 3
Yes, yes I do.
(20000000 chars)
「いいね！」 1
What kind of system are they stored in?
You’re going to need to provide much more information for us to be able to give you any answers.
「いいね！」 2
I store my information in a mySQL Database. BloxPlay
「いいね！」 2