This is a very interesting topic and certainly seems worthy of discussion. I am not sure where anxiety fits in, however. Clinically, what I have seen primarily regarding the Internet is that the same people who have problems with other compulsive behaviors (such as spending) are coming in reporting Internet addiction. They are spending their time, money, etc. on the Internet to the exclusion of their other responsibilities. However, I have not yet come across anxiety as a prominent issue on-line.
Are there some specific issues of anxiety in on-line relationships for us to discuss? Or should we resume this interesting discussion in the General Discussion Forum of Behavior OnLine where a wider range of people would be able to participate?