Canaries...
We'll end up with the more caring providers avoiding gagging orders like this:
** admin has joined chat**
Hi. Just to let you know we've not added anyone to your conversation. Bye.
** admin has left chat**
One minute later:
** admin has joined chat**
Hi. Just to let you know we've not added anyone to your conversation. Bye.
** admin has left chat**
One minute later.....