In many ways, the boundarylessness on internet, with its instant intimacy and outrage expressed when instant intimacy is fended off, or disagreement is expressed, seems very much in the range of mental disturbance and this is common not only on chat lines designed for this, but on many other lists as well. I am inclined to think that labelling the internet phenomenon an addiction does not come near to describing the primitive feel of it. In this paper, Norm uses transference in the more classic psychoanalytic fashion, but it translates very obviously into mirroring transference.
Norm goes on to describe how untamed grandiosity gets triggered in such a set-up.
While he describes it from within the male experience and its war metaphors, I had no trouble translating it into my own female metaphors for grandiosity, and found the article very convincing. I recommend Norm's PsyArt web site as a link for the self psychology page.