I’ve been visiting Kevin Kelly’s Cool Tools site on a weekly basis for well over a year. As he says it "A cool tool can be any book, gadget, software, video, map, hardware, material, or website that is tried and true. I am chiefly interested in stuff that is extraordinary, better than similar products, little-known, and reliably useful for an individual or small group." You can spend hours exploring this site and as you do, you’ll learn about products that are truly useful.