Sounds similar to already existing Open-Source projects, like Tox[1] (which was discussed on HN a couple months ago[2].)

Questions for both projects still remain though: What sort of metadata can be collected from users of these programs? How can that metadata be used? Are there any security vulnerabilities that have been overlooked?

We are still a ways from having truly secure chat as the mainstream communication medium, but I'm glad Bittorent and others are helping move it in the right direction.

[1] https://github.com/irungentoo/ProjectTox-Core [2] https://news.ycombinator.com/item?id=6121225