How does this invite thing work anyway?
User Class How to get invites
Power User
1 invite/month (if 1 invite not used, next month system will not give another invite)
VIP
3 invite/month + if they donate, they will get extra invites
Uploaders
1 invite/month
If an invite is not confirmed within 3 days it is automatically deleted and refunded to your account.
You can view how many given/available invites by going to your "User details" page and looking at the number next to "Given"/"Available." To invite someone select "Available", enter an email/message on the following page, and press "Invite!" A confirmation email will be sent to the email address you have entered and the person will be given 3 days to confirm it.