So, how has the 'no iTunes' policy worked, then?

Inspired by Kid Rock's success, his label decided - bemusingly - to pull Estelle's six month old album from Apple, too.

How did that work out, then?

Estelle's single plunged 26 places on the Billboard chart.

But the album - did that benefit?

Not really - that tanked over 100 places down the album chart.

Another smart move by the music industry, then. Well done, guys.