I've not tried online counseling, but I do think that for me a person to person experience is the preferred option. Sometimes there is a lot I say with my body language that my T picks up on without me actually having to say anything. It helps her because she can see my reactions to her questions/statements, and she can steer the conversation accordingly. And it helps me because I don't have to say everything. My body language has already said it long before I open my mouth.