Robbie Kellman Baxter asks and answers what features should be free and what should be paid in a freemium subscription? I get asked all the time what features should be freemium (aka free forever) and what features should go behind the paywall. The answer is, of course, it depends. But here are some useful frameworks. Does your business model depend on VIRAL MARKETING? If your “free” subscribers are a marketing channel for attracting paid subscribers, you might want to invest…