As someone not terribly well-versed in the jargon of the finance and stock market worlds, this was a pretty good article for helping me make sense of it all. My head is spinning a little, but I've got the gist of it. Kudos to a16z for the good writeup.
I do have one question: can someone clarify for me what "tracking stock" is? I see that it has no voting rights and pays no dividends, but I don't understand how the market sets a price in that case. What is stock if not voting rights and dividends?