Here are some statistics to help you answer that question.
Based on those numbers you would be crazy not to be on You Tube.
I recently took a brand new landing page with a new url and in less than 30 days using 12 two minute videos that site was appearing on the first page of Google, Yahoo and Bing for the keyword I wanted it to rank for. Proof that video is a powerful marketing tool. I did use additional video sites to distribute those 12 videos, but once you have created the content, distribution is easy.
This strategy works extremely well whether you are selling anything online or not. The landing page I just mentioned was created to build a database and drive traffic to a storefront. This video shares some additional reasons you should have your business on You Tube.
Please log in again. The login page will open in a new tab. After logging in you can close it and return to this page.