I have been working remote for over 5 years now, but I wouldn't have survived without a lot of luck and years of experience as an intern/entry level employee at an office with some brilliant mentors.
I have tried mentoring in the same vein as those who taught me, but it hasn't caught on as well. I am concerned about how many people entering the workforce fail to reach that superstar threshold because they are missing a few key elements (which may be face-to-face interaction). I am also quickly learning that the high-impact employee does not necessarily make the best mentor.