Look at what news.ycombinator.com does. The company, ycombinator, is a venture capitalist firm that funds entrepreneurs generally involved in software and web services. Their news site is about software and entrepreneurship, and it generates content by user submissions and by allowing commenting. This has allowed many entrepreneurs to know who they are and provide many applicants for funding. It is their funnel and hook.
Something similar can be done here but with a different focus. Longevity itself may be too narrow for this but health and biology would likely be broad enough. User questions and discussions within the forums are the majority of posts, leaving a lot of linkable essay or news content as an aside. This could provide a new focus, bring in a more diverse crowd, allow for an additional funnel for funding projects and introduce longevity concepts, etc.
The idea is that hiring a writer to generate content would be expensive, but aggregating it would provide a lot of the benefits, while the site is almost all user maintained.
Edited by Athanasios, 22 June 2011 - 03:54 AM.