any companies have tried the freemium model and then realize that it can't scale (IE: the costs to support this free user base out weighs the benefits). It has

any companies have tried the freemium model and then realize that it can't scale (IE: the costs to support this free user base out weighs the benefits). It has scaled wonderfully for Evernote: "From the start, Libin modeled Evernote to be profitable at a 1% conversion rate ... Right now, roughly 2% of all Evernoters are premium customers ... Libin wants to maintain that rate at 5% or less. If people start converting en masse, 'that means our free product isn't good enough,' he says." http://www.fastcompany.com/magazine/147/next-tech-remember-the-money.html http://www.fastcompany.com/magazine/147/next-tech-remember-t...