I'm incredibly introverted because I moved away from social encounters. for any young person to remove themselves from their community will cause damaging affects in future.
to only meet people online is a short step away from being unable to handle yourself socially at any event or gathering. this would include face-to-face interactions with only 1 other person (besides yourself). you take away body language and other non-verbal cues. worst, a 16 year old would be exposing themselves to varied dangers online. I support the forum base online community, but this comes with restrictions. any person can can become a victim in both online or in person environments, but there seems to be less control online I think.