I actually think the "Dear T I need to tell you something" thread is almost the same as bot communication. In the Dear T thread one expresses oneself to an unknown audience (anonymous forum readers) with very little sense of how they would perceive or understand those words - much like the experience of talking to a robot I imagine.

I think this can definitely be very comforting and useful - a kind of catharsis. I suppose a bot would take this a step further and provide some interactivity in the experience.