Currently we are working out the remaining bugs which can be expected with platforms of this magnitude.
UPDATE: We have fixed the sign up issue so the steps are as follows. Fill out the form on this page http://secretenergy.com/register You will receive a activation email to confirm you email. Login using the username and password you choose. If you cannot find the activate your email message check your SPAM folder.
Also you can always login via Facebook and you will gain immediate access.