Cyberspace is itself just a concept, a concept with a physical manifestation, that allows people to interact in cyberspace as if it were more than a concept. Now, the information that we experience as cyberspace does exist in physical locations: data itself has a physical weight, in that it is actually bits of magnetized rust adhered to metal or plastic. But if you took every computer that was out there on the internet and you put them all in one giant room together, all the data intact, that in and of itself would not make up cyberspace. Cyberspace exists in the connections between the machines, and yet it seems to exist within the people who put the data on the machines. So then, maybe, the question becomes: do the connections amount to space? The wires do have a physical substance. But cyberspace is really the moving of the data across the wires. Not the wires, or the data, or the people. It is a time based phenomena (even if that time is measured in very small increments). It is an event, and therefore cannot also be a physical place.