You should be using Youtube as part of your strategy if you are trying to make money blogging or do any kind of internet marketing. I've heard that it is the second largest search engine--thousands of people go there to look for information about products and services. Speaking of search engines, Youtube videos also tend to do very well as far as google ranking goes.
One serviced I'd highly recommend for this is Vagex. You can use credits from this website to increase video views, which is one in how they rank within Youtube.
One important note: you cannot directly monetize videos you put into the Vagex system. But there are no limitations in the kind of links you put in the video descriptions (affiliate links, links back to your blog, etc.). Just click here to check out Vagex and increase your Youtube views.