I don't see that forcing everyone to use Internet Time automatically makes it universally accepted or even understood. I personally consider it irrelevant because it can only be used in one place and that is on the computer. You won't find Internet Time in the lounge room, on the telly, at the railway station (the trains run late enough as it is), or the post office. You make a valid point about people not always realising that there are people around them not in the same timezone though this can easily be overcome by quoting GMT which everyone can relate to with some quick research, such as Windows time settings which states how far ahead or behind GMT your timezone is, or if you can be sure that all those you are communicating with are in the same country as you then quote the main timezone for the country you are in.
