“Audio Scrobbling,” as defined by Last.fm, is the act of submitting to a central database the details of what songs you’ve been listening to (what album, by who and when you listened). Scrobbling to Last.fm is the main reason I use the service these days, especially since it made the internet radio part of it a paid subscription only service for Australia. I think that being able to easily track and visualise my listening history and share that with friends is a great example of the social inter...