> most of it (read requests) is safe to preload on mouse down and then navigate as usual on mouse up. Since the click takes 100ms+ this makes navigation feel in

> most of it (read requests) is safe to preload on mouse down and then navigate as usual on mouse up. Since the click takes 100ms+ this makes navigation feel instant. This is an interesting idea I had not thought of or (knowingly) seen. Is it widely implemented? What are the pros and cons?