I offered an Elluminate session last night for students on E852 and I was extremely impressed by how committed students were. The session took place at 9pm GMT but students attended from Russia (where it was a 1 am start) and Korea (6am). Even for those in Europe, it was late by the finish (well after 11 pm). Even for the few in Britain, the timing was not necessarily convenient with aspects of family life providing distractions.
So, it seems that many students are willing to devote time for the chance to interact in real time by the best methods we have that are practical.