In order to protect this forum from spammers you need to provide A VALID EMAIL ADDRESS when you sign up! You will then be sent an automatic email with your activation link in it without which you won't be able to activate your account and start posting.
If you sign up using an invalid email address, we receive a failure notice and will remove your account.
If you signed up, but never received a confirmation mail, it is most likely that you entered an invalid adress (accidentially or on purpose) and that this is exactly what has happened to you. If so, please be assured: It is not because we don't want you as a member in our forum! But since you can't activate your account and we can't contact you (because we don't have your email address) this is the best option, because a) it is no use in keeping an inactive account and b) you can use your preferred user name if you try to sign up again.