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Hi Christina-

Have you tried http://www.socialoomph.com/? I have had clients that used to automate and schedule their tweets and FB postings. From what I can see I'm not sure if this support youtube or not. But this should give you a start!

Otherwise, you can use a remote virtual assistant service, like http://www.asksunday.com/. I have used Ask Sunday before for mostly online repetitive tasks. They are based in India and can basically do anything that doesn't require their physical presence. Hope this helps

I always stick my "sweet spot" keywords in the title tag of the home page. My most profitable keywords (aka products and services) are best displayed on the home page for both users and search engines. I would focus on getting links with great anchor text for your most profitable keywords on your home page from authoritative and relevant sources.