Yeah, I said the prices "seem pretty competitive with iTunes" -- Amazon's probably cheaper for most tracks.

I understand what you're saying about yet another MP3 store. I've always been afraid of committing to a store where I couldn't easily get all my music out DRM-free. I bought maybe 5 iTunes tracks a long time ago, and have bought a handful of MP3s from Amazon, but believe it or not, I've actually done most of my MP3 purchases through AllOfMP3 and AllTunes. Firing up a Windows VM to download from Alltunes is kind of a hassle, though, and since I have an Android phone and have bought into most of the rest of the Google ecosystem, I'd definitely start using it exclusively if I could get the end-to-end sync including my empeg going.

I haven't done the sharing thing yet, as I don't feel like spamming the world with notifications of my music purchases. G+ better have an option for muting those / keeping them out of my stream.