The birth and death of Cyberspace

This week we have learned about the Cyberspace. What is cyberspace? In my simple understanding, cyberspace is another unreal world.
Again, in class we have discussed about "cyber-". I have metioned in my blog that I think Cyber means something existing in suppositional world.
With the birth of internet, the cyberspace appears. It could be called as the second life of people. In cyberspace, most people would like do what they can not do in real world. Thus, I think that cyberculture shows different character of people and cyberculture made people as full people.
For the death of cyberculture, maybe some new media will appear to kill the cyberculture and ocuppied people's second life?