Hi, Silverdrop. I'm guessing you mean the video reviews we post on EdenCafe?
If so, then we generally post videos to correspond with the contest/giveaway for the week. So if we're doing a giveaway of Dona stuff, we use video reviews of Dona products, etc.
For the most part we only have so many of each product and it's usually *just* enough to post one every day. If we happen to have a ton of videos -- say, for example, we're featuring multiple products in the contest -- then we generally choose the ones that are the best quality in terms of sound and visual.
Again, hope that helps!