Videos: Is There a Benefit To Having Lots Of Video Sites Hosting A Video?

I sell offline marketing to small business owners. Video is a huge part of what I sell.
Of course, I use Youtube. I have over a hundred Channels (one for each client).

I also send videos to other video sites, Daily Motion, Metacafe, etc.
And I change the titles and descriptions when I send copies of the videos to the other sites. Occasionally one shows up in a Google Search, but not with duplicate content.

My question is; Is this really an advantage to the client? And if so, what is it?
Every video site I use has Nofollow links going out of their site. So SEO use is limited (I would think). And most won't even let you have a Nofollow link to your URL in the video description.

I know people who use Traffic Geyser or Tubemogul (I know, they just changed their name). They send the same video with the same title and content to a dozen video sites or more.

I still do the same thing for my clients, because it takes almost no effort, and they may be getting a benefit. It's not part of my presentation.

Now, I do a whole lot to promote video on Youtube. And I see the results.
By the way; There is a Fiverr gig where this guy will take your Youtube video and send it to 30 videos sites for $5. A great deal, but is there really value?

I'm not asking about the value of video.But the value of multiple identical video content on multiple video sites.

Anyone?