The first sign of health problems came before I went to the 2007 Web 2.0 Summit. Late that September, I was traveling by car to Kaikoura, a scenic coastal town near the top of the South Island of New Zealand. My wife and six-year-old daughter were with me; we intended to spend a few nights there and then visit my nana in Blenheim on the way back. But during that car trip I felt unwell and was frequently stopping to urinate. After we arrived in Kaikoura, my wife and I began arguing—partly du...