Here is a plot that shows how Egyptian addresses are now unreachable. Here is another plot (see right) about Egypt's departure from the net. It seems that landlines are the only way to communicate. How long can Egypt stay off the grid? We'll see.
In the mean time, protests are continuing. Despite all the censorship, news is still coming leaking out of Egypt. Follow Al-Jazeera's live blog on Egypt protests here and live Twitter feed here. Also, updates from BBC here.
Update: Also added Guardian Live blog (tip from Rainer Bromer)
Update 2: Also check out live pictures from Al Jazeera. This is incredible!
Also, for an idea, here is a raw video from Cairo: