I too am very disappointed and agree with the other commenter who said they are big enough that they don't have to worry about closing it. When I realized I wanted an API key they had already stopped handing them out, and now the axe falls again. I don't argue it's not within their right, it's just sad.

I have upwards of 1200 graded movies in another service that I used for a long time and that has a public API. Nowadays, I use trakt.tv a lot (and pay for it, because I really want it to be around, like I pay for Netflix and Spotify) and they also have a public API that I can use to write a tool and migrate/sync my movie grades there. Netflix' recommendation engine could have learned more about me in 5 seconds than it will in 5 years, and any grades I put into Netflix will never leave it.

Yes, I know I'm an edge case. Yes, I know it doesn't make business sense to cater to me. I still need to gripe a bit.

I have a custom app for managing my music too that uses the Spotify C library (wrapped in Go). I love that I was able to do that, and the day Spotify EOLs that library (and doesn't provide an alternative) is probably the day I leave their service.

Enough ranted. Sorry. I just like to take my data with me when I go.