Biggest Selling Album of the Decade...?

This album beat the record sales of Pink Floyd's Dark Side of the Moon, according to NME news. . This is also a nice band to follow up from talking about Alt-J, because their popularity soared through social media, specifically Tumblr, just the same. This band is Arctic Monkey's AM album. With it being the best selling album of the decade, most have already heard it. In case you haven't, check out Do I Wanna Know? (165,000,000 views!)
I first heard Arctic Monkeys when they were still looking for their sound. They were following Fall Out Boy's path of songs that are full sentences. If you love this album, check out the songs from their roots, especially the album Whatever People Say I Am, That's What I'm Not.
Arctic Monkeys - 'Fluorescent Adolescent' (2007)
Arctic Monkeys - Teddy Picker (2007)
Arctic Monkeys - When The Sun Goes Down