There are tons of other monetization ways - but right now we are trying to focus on the main revenue model.
Another question I wanted to bring up: What are options for ways to construct a SaaS business model?
1) 37 signals approach - which is a very limited hidden free plan and then numerous other paid options.
2) Squarespace approach - 15 day free trial, with no credit card required. If you don't upgrade then your account is canceled
3) Carbonmade approach - funnel everyone into the site via a free plan and then once registered try to get them to upgrade
4) And then another pretty common one is - credit card down on sign up with a 15 day free trial, which rolls into a paid plan if you don't cancel.
Can you guys think of other options?