Lunar orbiters spend half their time on the far side of the moon, where they can't access earth. You'd need a constellation to provide any kind of emergency system.

There must exist a lunasynchronous orbit that would remain over the earth side of the moon, though I'm not sure if its close enough to the moon to avoid being perturbed by the earth and kicked out.

>There must exist a lunasynchronous orbit that would remain over the earth side of the moon, though I'm not sure if its close enough to the moon to avoid being perturbed by the earth and kicked out.

Selenostationary orbits (The astrodynamics terms generally take the Greek name) are indeed unstable and vulnerable to perturbation. Instead, you can have a trajectory around one of the Earth-Moon LaGrange points (points where the gravitational pull from each body is equal)

Is othernet easy to access? The receiver they sell on that website is sold out.

Is there a list of programs available?

I believe the signal was shut down at the end of last year.

It was a long experiment, but just an experiment, since it never found a way to sustain itself economically.

More's the pity; it was really fascinating.