Looks nice for web apps. Not sure how this fares for mobile apps.<p>Interesting model with imminent flaws I suppose. If I share the login email to anyone, they can simply click on it and login and use premium services (e.g. Netflix etc) if they use this API?<p>Also, if the email is hacked!, the dashboard on fast.co shows all the sites that use the API, so all of them are compromised nicely without effort, very huge security flaw IMHO.