Video is Worth a Million Words
Dr. James McQuivery of Forrester Research stated as much in his research, which finds that one-minute of video equals 1.8 million words*.  How long would it take for you bang out that much content on your blog? A single frame of video equals 3 pages of written content.
According to a Hubspot article on Internet Marketing statistics in 2012 (http://blog.hubspot.com/blog/tabid/6307/bid/30495/25-Eye-Popping-Internet-Marketing-Statistics-for-2012.aspx)

* viewers of online video will hit 169.3 million
* over half the population and 70% of internet users will watch
* mobile video will reach over 54 million viewers
* smartphones video views over51 million

Other interesting stats

* 73% of home sellers will list with an agent that does video, but only 12% of agents have a YouTube account.**
* Youtube has over 800 million monthly unique visitors with over 4 billion video hours being watched***
* 30% of YouTube traffic comes from the US***
* YouTube  traffic from mobile devices tripled in 2011***

How to do video?
I have been creating online video since late 2007. Sadly, those early videos have been lost into the deep recesses of an angry delete from my own hand. I started doing an only hi-8 Sonycam that I had to use another product to digitize the video. So, I can upload it to Windows MovieMaker which was a horrible program to even try to edit videos.

Currently I use:

camera:

* Sony HDR-200 ($700)
* Kodak Zi8 (paid $80/Amazon $250 to $400)

software:

* Magix 17 ($100)
* iMovie

misc:

* green screen ($45)
* stands ($75)
* wireless mics ($100)

 How to use video: (http://davewoodson.com/wp-content/uploads/2012/08/don-150x150.jpg)
Really -the sky is the limit.  You can use online video for almost any aspect of your business. I have had clients use it for:

* client testimonials
* how-to's
* product information
* home tours
* presentations
* and the list could on and on - you control the limits

sources:
* Impact Group (http://www.i-impactgroup.com/A%20Video%20Is%20Worth_041812.pdf)
**heard this from several different sources
***YouTube Stats Page (http://www.youtube.com/t/press_statistics)