"Twitter drastically reduces the complexity of its signup process, which brings double-digit growth..Wall Street is happy, but engagement suffers, and revenue/u

"Twitter drastically reduces the complexity of its signup process, which brings double-digit growth..Wall Street is happy, but engagement suffers, and revenue/user drops. What metric really matters now?" Call me old-fashioned, but revenue is revenue. Slicing it up as 'revenue/user' is artificial, because unless you also marry 'revenue/user' with 'cost of user acquisition', 'revenue/user' is (almost) meaningless. Example: If Twitter suddenly got another, say, 30 million users overnight for essentially $0 in acquisition costs (perhaps just the incremental network and server costs), 'revenue/user' would indeed decline overnight. Why should they care? Revenue and cost of generating that revenue are what really matter.