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We would like to create either a new website or a new section of our existing website that will feature (in time) a lot of content including a forum, video training, tutorials and downloadable resources. Logistically, it would be much easier to create this in a new site (we'll call it newproduct.com) and refer people to the new site. We would, however, like to keep all of that content on our existing site for the sake of content building and SEO. Should we: Duplicate the content and use no index no follow and/or rel canonical? Host all of the content on our site and set up a vanity domain (www.newproduct.com) to point people to the deep linked area (www.mainsite.com/product/newproductinfo)? Host the content only on an external site with the occasional link back to our main site? I realize there are other options but they're mostly variants of the above. Our main objectives are to make it easy for people to get to while leveraging the new content for SEO purposes. What are the pros and cons of these different approaches? What seems to make the most sense? Thank you!