I believe a large-ish download icon is good user interface. I know if I go to a web page discussing a program and desire to download it, if I don't see a button

I believe a large-ish download icon is good user interface. I know if I go to a web page discussing a program and desire to download it, if I don't see a button (or the word "Download" in large, bold text), I immediately switch into find-the-download-page mode. Since Firefox this has meant typing "/download" into the window, which has mitigated a lot of the need for a button, I guess. :)