Because of the huge volume of spambots that regularly attempt to use our forums, we currently use system whereby an admin receives a system email whenever a new registrant applies. Based on the user name, along with the email address, the admin then tries to figure out if the registrant is a real person.
Per the forum rules, "In order to help foster civility and camaraderie, please register with and use your real name. Accounts using fictional screen names will be deleted."
If you register for the forum but your account is not activated in a timely manner, it is likely because you did not use your real full name and the admin either rejected your user name or, more likely, could not tell you were a real person.