anoynominty, group size, proximity

How does anoynominty, group size, and proximity influence participation and communication in cmc groups?  I think group size in cmc is not a big factor like all the other ones.  i say that because there are plenty of things that can reach to the masses.  First, we have chat rooms that allow everyone to be "there" at the same time.  Second, people can now video chat and video conference with the group.  So, with technology we can bridge the gap between distances.  people from all over the world can have a conference through the internet.  Proximity is also not a big issue again because of technology.  as long as people have an internet connection, a webcam, and fast internet service, people can meet and discuss anywhere.  The downfall with any of these uses is that we miss out on face to face interaction.  as we try to bridge the gap between distances, we may never achieve that because nothing replaces having someone there.  We can measure body language and mood when we are in the same room.  But, we may not be able to gage that with cmc.  Therefore, we lose a lot of chemistry and synergy that we could get when being in f2f.