[toksogun]

A. Skype and Facebook are close on that and you would be on Facebook's platform.

B. Has good promise. Workers wouldn't like it but it may put managers as ease.

C. Has good promise. You could make it into an app and focus on some niche content.

[lupatus]

I used something like B at my last job, in which our office was in Virginia and I worked from the Alaskan Bush, but the system we used was a bit cobbled-together.

With C I purposefully would not make it niche so that my son could explore a wide-array of resource. The novel aspect would be automatically rating/filtering public domain content to exclude non-kid-friendly material.