I've been using Last.FM for nearly six years, but it isn't the community or music discovery that keeps me around: it's the data.

Reviewing my changing musical taste, questionable detours included, is both addictive and fascinating. But the dataset is incomplete: what about CDs/vinyl? Technical issues? Simple forgetfulness? The ability to manually scrobble entire albums would be amazing.

As such, the "Universal Scrobbler" was an exciting discovery, but despite the solid execution, I just can't justify the price. Still, I've begun to wonder if an afternoon tinkering with the Last.FM API might finally solve this problem. Rainy weekend plan, sorted!