YouTube has added a basic editing tool to its video viewing site which allows uploaded clips to be cobbled together.
The YouTube Video Editor isn't going to give Final Cut Pro anything to worry about, but it will allow users to combine multiple clips, trim the beginning and end of over-long videos and add soundtracks all without worrying about file formats.
The tool has a simple drag-and-drop interface to add previously-uploaded clips to a time line (YouTube calls it a story board), from where you can edit individual clips by dragging handles to the cut points at the beginning and end of the video section.
There's an Audio Tab from where you can choose music tracks fro YouTube's AudioSwap library, but adding one of these tracks will also festoon your edited masterpiece with advertising.
There's also no way to overlay sound, so once you add a track to your edited video you can say 'adiós' to your own audio.
Publishing the finished clip is a one-click affair and involves no additional uploads.
Budding Spielbergs can check out the tutorials and a really annoying promo video here.