I agree it is stupid that data you enter into a service, which you cannot know if it will remain (and that means every service), you can't extract to do with it what you want (log it yourself). It just gives me a better feeling if I can extract my netflix watching habbits and ratings for my own usage instead of relying on their ways (but their way isn't bad).
Also I just recently tried Mopidy again, a year ago it would crash a lot and time outs and stuff, but now I have it running as my main MPD with MPDroid on my phone and also Mopidy-Spotify. It is really awesome! I can just use my own keyboard shortcuts again to prev/play/pause/next again which I always found a burden in the spotify client.
I'm with you on that Spotify C library, it would suck so much if they would EOL it without replacement.
They might get some flack for suddenly being less open about data. Adding a [download my ratings] button on the account page seems much less ambitious than maintaining an API so that might be on the table in the future.
Also I just recently tried Mopidy again, a year ago it would crash a lot and time outs and stuff, but now I have it running as my main MPD with MPDroid on my phone and also Mopidy-Spotify. It is really awesome! I can just use my own keyboard shortcuts again to prev/play/pause/next again which I always found a burden in the spotify client. I'm with you on that Spotify C library, it would suck so much if they would EOL it without replacement.