Making money from Video product reviews on ExpoTV, MetaCafe, and Break.com?

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There's sites like ExpoTV, Break.com, and Metacafe which will pay between $2-$20 per video that you upload PLUS page view revenue. I was thinking, it makes more sense to do reviews of products (via video) for these sites as opposed to places like ReviewStream, Triond, etc. which pay WAY less per review. The only thing is you have to not have a fear of having your voice on video. So I'm thinking about switching over to doing reviews on video so I can upload to these sites. Does anyone recommend this or are already members on any of those video sites?