The trendy nature of these business is a negative on valuation in my book. Sure, it'll grow a bit. And then the next new thing will come along. It likely is rea

The trendy nature of these business is a negative on valuation in my book. Sure, it'll grow a bit. And then the next new thing will come along. It likely is really profitable for those investing early on and founders. As an employee at a company like this, I'd worry about all the hard-work having a pay-off four years down the road when options vest, etc...