Investors have used all sorts of valuation models in the past 20 years. Which to use for Twitter, now that it is preparing to float?
Here’s another handy measure: price per worker. Twitter is more than its staff, of course. But it’s a useful sanity check on any valuation. The higher the value, the more investors have to assume there’s something really special about their assets – factories (a carmaker), intellectual property (think cure for cancer), innovative culture (Apple?), near-monopoly position (once Microsoft, now Google). Read more