37signals valuation tops $100 billion after bold vc investment (37signals.com)

You know, as much as I like 37signals' general message, this is starting to go too far. Everyone is allowed to have their own business model. If you want to make tools for business, then a pay model probably works well. But if you're working on the next Twitter where adoption is what increases the value of the product I don't think one should exclude the use of alternative potentially free business models.