I'm not sure how long you'll keep on reading stuff, but rest assured me and many others will cherish the very fond memories of collaborating with you - you've always had a sharp wit and a practical sort of unconventionalism that gets things done. We have much to thank you for.
We worked together on Digistan and the "The Hague Declaration", which I helped host in The Hague - and I think it still is a strong statement that is worth repeating. People can sign that declaration:
I'm very much saddened to hear about your disease - and deep respect for the way you handle this unannounced change of plan. I hope your remaining time will be spent with those you love looking back on a rich life where you've left the world better than it is - and got the max out of it. I'll send you an email, so that when your kids are older and want to know about the things you've done they can contact me. Take care, my friend.