Defriending on FB

[I wanted to save this somewhere, and it looks like LJ is the best place available to me at the moment.]

A friend of the family recently asked me "why did you unfriend me?"

I answered, "Because several weeks ago I came to the conclusion that Facebook is not an effective means for me to communicate with you. It is difficult for me to convey tone on FB, and what I think I am expressing is not what you are perceiving. Since I have been unable to change this situation, I decided it would be better (for me, anyway) if I stopped."