This is so sad!
When I was studying for GMAT I used to frequent SC forums the most. Whenever I needed help with a question, I would always look for his responses (even though I had other expert responses). He was always concise and often explained how one should approach the question in an exam setting. This is something I loved because we all know how important time management is for GMAT.
I had the opportunity to chat with him briefly when I was looking for a tutor to help me with my GMAT preparations. I was working with a time constraint then. He told me that he would need more time to ensure that he can help me get to my target score. Unfortunately we didn't end up working together, but I really appreciated his honesty. He genuinely cared.
Even though he is no more, his legacy will live on through GMATClub! Millions of GMAT aspirants have learned from his answers, are learning from his answers right now, and will learn from his answers in the years to come. Thank you
daagh.