I am so saddened to hear this news. I too have been on the receiving end of John's generousity and good will. Last year when I announced on tug that I had won an auction on ebay for a $1 timeshare, John pm'd me to let me know that he does closings if I was interested in hiring him. I chose to do the closing myself.
I ended up running into some problems. I emailed John with a few questions, totally expecting him to tell me where to go. Instead, he emailed me back with his cell phone number. I called him and he spent a good amount of time helping me, and even made a phone call on my behalf. In the end, I asked him what I owed him and his response was "not a thing and if you have any more questions, don't hesitate to call."
My heart goes out to John's wife and family. He will be missed so much here. If this is the kind of impact he had on strangers, I can only imagine what he must have done for his loved ones. You were so lucky to have such a wonderful person in your life, even if it wasn't long enough. It sounds like you know how lucky you were. I hope there will come a time when you can remember John without feeling the pain of your loss.
Sincerely,
Amy