Hipmunk CEO: Yeah, Entrepreneurs Think It’s Getting Wacky, Too
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I just wanted to say thanks for the tip.
The reason ITA keeps it a secret is because ITA is a middleware company and not consumer facing. Bing, Hipmunk, Kayak, Orbitz, Hotwire, and many more are all customers of ITA[1] and it takes pains to not compete with its customers.
That's also why everyone was freaking out when Google offered to buy ITA. Google could have easily pulled the plug on all of those sites and taken over the industry. So Google had to commit to tons of concessions to ensure that wouldn't happen in order to get approval for the merger. Basically, Google has agreed to ongoing audits by the Justice Department for years after the merger. [2]
[1] http://www.itasoftware.com/about/customers.html
[2] http://www.nytimes.com/2011/04/09/technology/09google.html
The new version, http://matrix.itasoftware.com/, has no such login requirement.
I am awed.