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For example reports of the kind produced by 'Wolfram|Alpha Personal Analytics for Facebook'.
Possibly these variables on various graphs to get a quick picture of the scene - companies, founders, founder backgrounds, number of years of operation, funded by, valuations etc.
Or any of you interested in gathering these statistics and plotting graphs?
I'm deliberately not asking open ended question so that you can tell me the first thing that comes to your mind.
Thanks.