Sad news indeed. I read his work in my formative years and it's safe to say that he partly made me the man I am today, influencing the way I think about the world: critical, but with a sense of humour and a touch of absurdism.
Terry Pratchett gave me shelves of books, a sense of community on this forum (where I haven't shown myself as much as I could) and a great outlook on the world and life in general.
So thanks to him for his work, and thanks to all of you for enjoying it together. Keep this up!