It's definitely a concern when using some of the more far flung google products that this can happen. My company is developing a similar product (though it's going to be going beyond what is here).

We intend to stay in operation for a very long time! It's a product we need ourselves and we pour our blood, sweat, and tears into it. We're in private beta currently and if you'd like to try you can contact me (info is in my profile)!