Free service yes, but if you're paying for SaaS and rely on it for your business you should really get a source code escrow agreement in place. That will allow

Free service yes, but if you're paying for SaaS and rely on it for your business you should really get a source code escrow agreement in place. That will allow you to get the necessary components from the provider in case they go belly-up or such. Of course hosting the application is a whole different thing, but hey, at least you got all your data available.