For the web I wouldn't sharpen too much, unless you're uploading png. Jpg increases very fast in size when you sharpen because there are more abrupt transitions. One of the advantages of the method I described is that you get large areas that aren't sharpened at all, meaning file size stays under control.
But as said, I wouldn't sharpen too much for the web. UNless you don't have to care about people with slower connections.

As for film, you can do a search for unsharp mask. It does find its roots in film days. But I never used it. What I do remember is that some developers increase contrast, and that films with a lower iso are sharper (and less grainy) than those with a higher sensitivity. But I guess you already knew that.

There are no Borg. All resistance is fertile.