I would be very uncomfortable doing this due to the fact that they want a direct link your bank account. Were I to do it, I would open a new account at a bank I am not using. I would then fund that with a few bucks, maybe $100 or so. I have heard people talking about it, so this article is not the first I have heard about it independently.
As you can tell from my commentary, I am very uncomfortable with this app. I do not recommend it, not yet anyway.
If I hear more, or get word from those folks I know who are considering doing it, I will let you know with an update.