A few years ago Spotify removed scrobbling from it's client applications, requiring us to build a scrobbling solution using their API. While this works well for the most part and allows you scrobble on any Spotify connect devices (such as game consoles), users have reported that sometimes scrobbling stops working while using it. As the service relies on the Spotify API talking to Last.fm, there a variety of things that can go wrong with the pipeline. A short list of known problems: A servic...