Yes, and yes. In fact, it is arguably _more_ useful than BitTorrent on the majority of files people might share. You see, with BitTorrent, you typically share

Yes, and yes. In fact, it is arguably _more_ useful than BitTorrent on the majority of files people might share. You see, with BitTorrent, you typically share few files, and mostly the ones you just downloaded. There is little incentive to actively seed thousands or tens of thousands of files you don't even know are interesting to people. With the ED2K protocol, the premise is that you share a lot: complete directory structures, and you search your many hashes when others make a request. That is more or less _the_ way to share collections of items/files/media/etc (other than, perhaps, running your own tracker which shares every file in your sharing directories separately).