I added the web site URL of my blog at the very beginning of the description of my video. This does a couple of things. First, your web site URL is clearly visible to everyone that visits the YouTube home page. Your video will be on this page for about a week and you can expect an extra 2,000 visitors a day from this direct copy and paste or type in traffic. To the left you can see an example of how your blog URL would look if featured on the YouTube home page.
(linked via Darren)