I am about to make a presentation to investors and thus looking for some authoritive numbers to calculate and proove my financial projections.<p>Does anybody have information/links about the typical cost structure of a SaaS company: how much needs to be calculated per visitor/prospect/customer for support, marketing, acquiry, infrastructure, ... (did I forget something important)?<p>And is there a way to build in the positive effect of word-of-mouth in those projections?