Earlier quoted context omitted.
The email we sent to EU users (quoted in linked article) has the important details regarding the service interruption in the EU. Additionally, I can say that our privacy policy is concise, clear, and accurate with respect to the types of information we collect and how the data is used: https://www.instapaper.com/privacy If you have other specific questions, I will do my best to answer them.
Well, as The Verge says in the article: 'While we don’t know exactly what’s holding up Instapaper' I'm naturally curious as to what's holding up Instapaper. As you say, your Privacy Policy is very good, other than the disclaimer that says 'we may pass your personal data to others - who knows what they do with it eh?'. I imagine that this is the issue which is holding you up.
I'd bet Pinterest is very risk averse given how little money they make from Instapaper.