@codl That's one of the things it does, and you can upgrade to 15 and 20 after some stuff later in the game. It only works when you've rested at the bonfire you've kindled, though, so you should choose carefully which bonfires you kindle.

You can also use it to restore your humanity, which lets you summon NPCs and actual people for boss fights, but makes you vulnerable to invasions from humans and certain NPCs at specific points in the game.

of course, browser caches exist, too.

the best example of this that i've seen was Rotonde, which was a p2p social network using Dat. since your profile lived on your own computer, you could change the html & css & js as much as you wanted and it would still work (as long as you preserved networking with other people's rotonde instances)