As online practice emerges, it seems to naturally evolve its own etiquette. For example, even when sitting on Google+ alone, I bow to the webcam at the start and end of a sit. It is bowing to the Sangha. And even when sitting alone you experience the support of the Sangha: any of whom may enter the Zendo at any time as you sit. This means you tend to sit for 30 mins if that's what you set out to do. It supports your intention to sit.

Does anyone else have etiquette practices they have developed for their online practice?

Gassho
Myozan