Starting off in CustomerReviewVideos.com (CRV) there are only 2 reasons I would create my own video...
1.) Because I have a very specific product or service niche and cannot find any existing videos in video sharing sites like YouTube, etc.
2.) Because I'm already a video content creator
Other than those 2 reasons I would start focusing on a niche that already has video reviews. It's quicker to get started plus it's a great way to learn your way around CRV and think about how you can leverage it for your financial benefit.
You can find existing video reviews for just about any type of product on the market. So think of a niche by using some of our advice in the Quick Start Guide and then go to one of the many video sharing sites (I give you a list below) and search for your niche and/or product.
See wikipedia for a long list of video sharing sites: http://en.wikipedia.org/wiki
Note: Any video sharing site with an "Embed" code will allow you to include it in the CRV library and then use it for your video niche site.