I've always wondered if Wikipedia could come up with alternate revenue streams because of the huge amounts of people they touch, the mammoth cross section of content they have. And the kinds of traffic analysis they could do... Targeted ads? Analytics for companies (a medical, tech or other company could learn what their stakeholders are interested in), recommendation engines, content classification engines for media and news orgs (or even SEO or UX navigation conscious web devs) etc.. They could do these thighs gracefully. What do you think?