Its really not "joining" if you are cancelling a service as part of the announcement. What is so wrong with actually saying "we were acquired" and the new owner does not value some / all of our existing customers?
> For you, the Instapaper end user and customer, nothing changes. The Instapaper team will be moving from betaworks in New York City to Pinterest’s headquarters in San Francisco, and we’ll continue to make Instapaper a great place to save and read articles.
They are shutting down a developer product Instaparser that I don't think had much traction (first I've heard of it actually) and is less than six months old.
> As we focus on the future of the user experience, we’ll be sunsetting our developer product, Instaparser. Starting today, we will cease signups for Instaparser and halt billing for existing customers. In order to ensure a smooth transition for current users, we will keep Instaparser running until November 1, 2016.
[edit: parent added another sentence after my reply]
Yes, the API that no one uses and was announced in April. The product Instapaper that is in the headline and is what everyone knows about is not going anywhere.
My point was that in the broader scheme of things, a trivial number of people have even heard of Instaparser, let alone those who have heard about it, care about it, have signed up for an account, used it for anything beyond a side project, and are actually paying money for it.
As I said, Pinterest has cancelled one product (Instaparser) as part of the acquisition which had some customers. They are currently keeping the main product (Instapaper), but we will have to see if that is a long term thing. Pinterest picked some customers to keep and some to cancel.