[polynomial]

> But I still scrobble everything and it's cool to look back!

Unclear what you mean. They both scrobble, do you aggregate them together someplace?

[unemployed]

I do the same. You can fill in your last.fm username in Spotify. Spotify also has an last.fm app. The music you listen to scrobbles to facebook as well as last.fm. Edit: Oh I think he meant, scrobble in the sense of keeping track of what you listen to. You don't have to keep using the last.fm desktop client.