I do online therapy as well for PTSD. I've been with my T for 6 months. It's been really helpful. I've made more progress than I would have going to therapy face to face. I do once a week sessions (similar to IM or Skype messages) for a few hours each time and then contact usually once a day or more depending on how busy he is and what I need. They offer video chats if your comfortable with that vs typing. The company I use is talktala.