Hi
i'm the one "in charge" of that thread on the UKMix forum and yes, i can confirm it.
Last week were revelead the 110 best-selling albums ever in the UK, and that's from where the "The Joshua Tree" figure came out.
But that Top-110 only accounted for RETAIL sales, so doesn't NOT includ Record Club sales (sales by mail) or shipments (additional copies still in the shops). So the 2,666,000 figure is likely to be higher. Anyway we can trust that "The Joshua Tree" sold at least 2.7 million in the UK, not bad...
I reproduce here the data presently displayed on that thread for "The Joshua Tree":
Posted Sales = 16,227,000
America = 11,250,000
Certified Sales
USA= 10,000,000 (1995, RIAA) Canada= 1,000,000 (1987) Brazil= 250,000*
Europe = 4,266,000
Certified Sales
UK= 2,666,000 (2006, OCC) Germany= 1,000,000 (1994) France= 600,000 (1992)
Other Countries = 711,000
Other Sales
Australia= 350,000* New Zealand= 210,000* Japan= 151,000
I must say that a minimum additional sales of 2 million should be added to the US figure, and there are still missing sales from Mexico, Italy, Spain, and South America for instance.
So "The Joshua Tree" worldwide sales must be at a minimum of around 19 million but very likey higher, i'm still working on it...
Figures on the thread are constantly being updated and soon a Top-100 worldwide with estimated sales will be initiated.