Social Media reports that Scientific American is accepting user-generated science videos, which you can submit here. While the link seems legitimate enough, we can't find an accompanying article describing the program on the Scientific American website. According to the disclaimer...

We plotted the daily reach statistics of five popular science magazine websites to see how their traffic compares according to Alexa ratings, which are based on visits by people using the Alexa toolbar (but see this). ScienceBlogs' traffic ramped...