Torrent browser? Indeed. A plugin for Firefox dubbed AllPeers seeks to give people an easy way to occasionally trade large files. When e-mail isn't a suitable medium and there's no need to share it with millions, it sounds like something that could be quite ideal for many. A modified version of bittorrent, AllPeers is designed to be robust enough for basic file sharing of something that could be quite large, like home videos, but simpler than other mediums, like a P2P client or IRC. While I honestly don't see it as very practical, it seems quite neat. Definitely worth a read.