Someone once asked me, "If you could know what others have said or thought about you in your absence, would you choose to access the information?"
My answer was "No, because it's none of my business."
I think an important issue this kind of conversation brings up is our right to privacy as human beings. Theoretically, even if I was psychic, I would not want to intrude upon the thoughts of others. However, if they were psychic too, acknowledged my presence, and granted me permission to exchange thoughts, I might choose to accept. It's no different than a phone conversation. The same kinds of people who eavesdrop and wiretap would seek to exploit others in these scenarios as well. Just as in so many other areas of life, it's not the idea of psychic communication itself which is the problem here, it's the immorality of humanity that needs to be addressed.