Some of us have recently created a Telegram group.
If anyone here uses Telegram, or would like to join, please feel free to DM me for a link to the group.
Telegram is a pretty feature-rich app, which makes it good for communications and as a viable alternative to the more mainstream, surveillance-oriented, social networks like Facebook or Twitter.
For example, it supports client-to-server encryption and end-to-end encryption for individual, 'secret' chats.