I may be remembering incorrectly, but I think post-Napster clients like DC++ made it possible to resume a download from a different source, or pull the same fil

I may be remembering incorrectly, but I think post-Napster clients like DC++ made it possible to resume a download from a different source, or pull the same file from multiple sources, by comparing checksums. This made downloading popular files quite a bit faster, and eliminated most of the issues with p2p networks like Napster—it was just much less convenient because you had to search for the peers yourself.