Someone who has confidence but only when they're using a electronic device like AIM, text messaging, etc.
They will be sugestive and bold when they have time to think of answers on AIM but once you get face to face they're not even 1/10 as clever or fun.
aka the downfall of meeting someone online.
Sally: I met this awesome guy online and we talked for three hours.
Jack: You finally found someone special!
Sally: No, he only had electronic balls.