I had the privilege of meeting and working with Jon on a number of occasions.
I bought AC before I moved into my own office. I had checked out other programs but AC stood out (this was version 1). I emailed him questions and he answered. That did it, it, I was hooked. It was another 6 months before I used it on more than just a laptop because I was renting space in another MD's office. Like everyone else he would make changes to things I emailed with problems. It was wonderful.
Later on we met at Pri-Med. We've had long communications about what was good and bad in the program. I learned a lot from him. (but I still can't really code, not that he tried to teach me that)
He's a fascinating person and very engaging. I hope he does chime in on the board. He usually has very inciteful things to add.