You can make your own online videos, to share whatever drives your enthusiasm with the world, and lots of you have done so. If you want to build your own, I recommend you check out the two videos on the page. They will give you a few good rules of thumb and tell you about some excellent tools to help you succeed, many of which are even free (the software ones, at least; there are very few free video cameras or microphones, although there are a number of cheap but high quality hardware options). Thanks to Epic Fu and The Fine Bros. for some good insight into the process.