Can I be notified when I have available link credits?

Yes, in your Control Panel, click on "My Profile". Next click on edit my account settings. Here you can check the email notification option called "Unused Credits Reminder". Then click update. This will email you once per week if you have available link credits so you can log-in and spend these on new link selections.

You can view this article online at:
http://www.backlinks.com/kb/index.php/article/notification-credits