This isn't made for "most peoples" web sites, it's designed specifically for web apps with large Javascript footprints. Of which there are quite a few - the site I work on has ~200kB-400kB of JS resources.
It is for sites with large JS code, very high volume, and frequent revisions. I wouldn't do this if my site only had 1k logged in users per day or if I changed the code once a month.