[monkeyspaw]

Spotify has a $3 billion valuation as of last November. Pandora's value seems more in flux, but is probably somewhere in the 1-2 billion range.

That doesn't seem to me like they're small fish compared to twitter. given how much valuations fluctuate (Pandora was at $4 billion as recently as 2011), I think they're all in the same bin.

After all, Twitter's valuation is based on a less certain business model than the other providers, who have successfully implemented ads and premium accounts, and have paying customers.

[hkmurakami]

Wow I had no idea Spotify's valuation was that big. I stand corrected.

(Pandora is an interesting case, since they've publicly said that they're not going to be profitable for another 5 years...)

[josh2600]

Like I said, partnerships are on a more even footing than people that just consume the API.

Soundcloud is pretty big too.