I use a sitemap for my niche video scripts by going to http://www.xml-sitemaps.com/

For using vShare as you would a blog (embed only), so that it acts like youtube dispite the fact that your host doesn't have all the requirements, why not just get it and try it?

I think what I'll do is get a cheap hosting account, sign up for a month, and try it myself just to see what happens.