There's loads of free video hosting services out there.
Try
http://video.google.com - it's free and they don't insert any advertising into your clip. Or
http://videos.streetfire.net/ - they are basically for videos of anything fast with an engine; cars, bikes etc.
Both these services provide you with links that allow you to "share" your videos elsewhere. For example, the video in this article is actually hosted by someone else on Streetfire, I've just embedded it into my post -
http://kapitalmoto.co.uk/node/83
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