Anyone at all interested could have found out about the company, it's been near the top of Forbes list of largest private companies for years (which is even mentioned in the companies Wikipedia article):<p><a href="http://www.forbes.com/lists/2010/21/private-companies-10_land.html" rel="nofollow">http://www.forbes.com/lists/2010/21/private-companies-10_lan...</a><p>I'm guessing most people haven't heard of half the companies in the top ten, unless you're a consumer business you can be huge and almost no-one will recognize your name.<p>Here's a little test, how many of these companies do you recognize:<p>Bazaarvoice, Conduit, Klarna, nicira, Homeaway, Workday, Changyou, ServiceNow, Giant, Guidewire, DealerTrack, SuccessFactors, SourceFire, ArcSight, Popcap, ExactTarget.<p>They're all tech startups with valuations estimated in the billion+ dollar range. Unless you've used them you'll probably have never come across them.