I think initiatives like BitLet.org are interesting, at least in their attempt to take BitTorrent-in-the-browser to the most logical conclusion: BitTorrent-on-the-web. The ironic thing about BT-on-the-web (which, I think, is not the same as BitTorrent DNA) is that it practically relies more on external embedding of the player (and applet, unless your browser is HTML 5-capable) to further propogate its download speed in the browser, as opposed to the well-known bottleneck that such external embedding on third-party sites tends to exact upon server-based web video streams.

Of course, if P2P-distributed web video embeds do take off, then it seems like the new way to "be kind" (in the video rental sense) to other users is to leave our tabs and windows open for as long as possible to make other users’ viewing experiences a bit easier through seeding. But the prospect of such a method may make it quite a bit easier to distribute video over the web (and to lose less money on server bandwidth, which is a constant problem for any video sharing site); in fact, it somewhat democratizes video sharing by merely relegating a video sharing site to a glorified social networking service which links to torrents like any normal tracker or search engine (the user commentary, video responses, social bookmarking and annotations would remain a server-side feature to draw the users), and the resulting, P2P-enabled ubiquity of file availability and visibility (hence the moniker "viral video") would necessitate more liberal or copyleftist licensing schemes to maintain the IP safety of such content.

So I would embed one of BitLet,org’s videos into this post (which would cause an applet to load), but I can’t find an embed code. So in the meantime, here’s Mr. Cropperfield: the applet version and here’s the friendlier HTML5 appletless version (if you’re using Firefox 3.6 or a Chromium nightly build).