It's kind of lame to require a credit card for a 30 day free trial - we agree. But our billing system, Chargify, works much better that way, so that's the main reason. As regular internet users, we hate this as much as you. SORRY. Hopefully, Ethnio is a tool worth trying and then logging in to your account, going to Account >> Plan & Usage, and then clicking "free," if you don't like it.