I started creating and promoting my videos through YouTube in the summer of 2007 and was surprised by the results. After five months of having 10-15 videos on YouTube, my videos have been watched over 100,000 times (collectively).
Not only do videos help build your site's credibility, but they add personality to your site. And when it comes to generating traffic, you can display your website address on the video so people can navigate to your site when the video is complete.
Another great thing about YouTube is you can add a title and keywords to your video and this works much like search engine optimization. The more popular your video becomes, the higher you'll rank when people type in the keywords associated with your clip.
So you get the benefit of generating traffic from YouTube's site and they provide the code for you to easily embed your videos into your web pages.
If you have a tutorial-based site, videos can be extremely helpful because a lot of people are visual learners and absorb the information better through video than context.
So I use a lot of my videos as supplements to my content to help get the point across and it's been a major hit with my audience.
So I highly encourage you to jump into the world of video. It can really enhance your site's traffic and overall credibility.
Lesson #17 : Traffic Optimization - Advertise in Pay Per Click