I would love some resources, articles, best practices, formulas, examples, or advice on creating financial projections & models for web-based applications. I've found some online, though many reference advertising models. Ad models are fine & will be considered as part of the overall projections, but I'm especially interested in guidance on freemium models. In case this matters, this is for a B2B app.
FYI, here are some of the better articles I've found so far: