Sheldon Brown has died. He created what may be the most extensive trove of cycling knowledge on the Internet. Which I hope will endure.
I encountered him on Usenet under the rec.bicycles.* hierarchy, where he was always a source of good information and good humor. I ordered equipment from the store where he worked a few times and was glad to have his advice. Cycling is poorer for his loss.
adam .. thanks for reporting this sad news. djs