I made a video for my website business and uploaded it to youtube. it has had about 100+views. Of that 100,probably none have purchased anything,but they have browsed to my website. And my video didn't even cost anything to make and was made in less than 30minutes. Have a look: http://www.youtube.com/watch?v=peSWHL8Y-7w So in conclusion,make a video and upload it to youtube and at least you'll get traffic to your website,and maybe some sales.
I am not surprised that you didn't get visitors to your site...the video was awful. In fact, it's not even a video. If you submit a SPLOG article to digg you'll see the same results. Is that an accurate way of gauging potential traffic, no.
Not to toot my own horn or anything, but huge huge huge traffic can be had from utilizing such mediums if you do it right and lady luck is on your side. Pete