We'll have to validate posts before they come up so don't worry if you don't see your new post or thread immediately if you chose to post anonymously. This is unfortunately necessary to stop spam etc.
Please don't abuse this function, it's not real anonymity (the admins can see the IP address and figure out who's taking the piss if people start doing it).
This function is there to allow people to go unregistered for work issues and prevents someone figuring out who they are "on boards". Use it if you don't want the possibility of this happening.