If you have a winery blog, you can help your readers by showing them how to subscribe to your RSS feed. Just like I've done below, you can create a post with the YouTube video embedded.
To embed a video, just go to the YouTube Page, copy the "Embed" code from the right column, and paste it into your blog as HTML.
Although I prefer Bloglines to iGoogle, it's probably because I follow over 450 feeds (and the largest single group is winery blog feeds). You can see all the RSS feeds I subscribe to with Bloglines.
I'd be really pleased and flattered if I saw this video popping up on winery blogs. If your goal is to make it easy for your fans to get updates about your winery, teaching them how to use RSS is the best way to do it. Embedded video makes it easy to teach them.
(And if you haven't already, please subscribe to *this* blog!)
UPDATE 2009-06-07: Stephen Bachmann pointed out the bad link to my RSS feeds, which I've corrected. Scroll down to "Wine-Related Blogs" and "Winery Blogs" to see what I'm reading. Thanks, Steve!!!