The standalone pages on dev.jivesoftware.com are outside of the Clearspace instance, so you can create these pages and store them on any of your existing web servers. In the case of the downloads page, this was an easy way to link to our existing downloads process on jivesoftware.com. In the case of the dev.jivesoftware.com home page, we used a combination of web services and rss to pull content dynamically out of Clearspace for the most recent blogs and other community content while displaying it alongside of more static content like promotions, newsletter subscriptions, etc.
Steve wrote up a great document that describes in excruciating detail how you can add a simple page with it's own url. Check it out here:
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