[$] Video conferencing with BigBlueButton

While social distancing often comes naturally to free-software developers,
there are still times when we wish to talk to each other. In the absence
of community conferences, the next-best alternative is often video
conferencing. While video conferences tend to be held using centralized,
proprietary systems, there are free alternatives as well. LWN recently , a system that is
oriented toward the needs of online educators but is applicable beyond that
use case.