expectation of privacy
I don’t know about you, but I generally operate from the assumption that conversations I have with another person are “off the record”[1] unless we both explicitly agree that they’re “on the record.”[2]
[1] Default settings matter. A lot. Especially when the defaults are set 180 degrees from the user’s mental model.
[2] What’s the IM equivalent of the ever-present “this call may be monitored or recorded for quality purposes?”