>>Does the lack of nonverbal cues promote fantasy in an internet relationship? Do you think that some people in these relationships are filling a void in their RL? <<
I would say YES to your first question, and MAYBE to your second. I've written quite a bit about this in my online book THE PSYCHOLOGY OF CYBERSPACE (see especially the sections on "tranference" and the "showdown" article) - http://www.rider.edu/users/suler/psycyber/psycyber.html
What do others think?