According to Futuresource Consulting, Western Europe is embracing ebooks in a big way, with the British leading the charge. According to Which?:

UK consumers generated close to half of Western Europe’s entire spend on e-books last year, figures from a new European e-book and e-reader report said.

But as EContent reported in July, the rest of the world isn’t quite ready to commit to an ereader just yet:

As it turns out, ebooks are being embraced faster in some regions than in others. In the U.S., where a greater proportion of the population owns e-readers, tablets, and smartphones that can display ebooks, the market grew 76.2% from 2009 to 2010, double the growth rate of the rest of the world. Growth in Europe, the Middle East, and Africa has, in particular, been slower than Outsell had expected.