Clayton Wright sent me a link to The Little Data Book on ICT 2012 [~250 pages, 1MB PDF], which, he writes, "was jointly developed by the World Bank and the International Telecommunication Union to show progress made in 216 economies (countries) from 2005 to 2010".
The Data Book is worth browsing for the sense it gives of:
- the pace of change;
- the extent of "catch up" that there has been between middle income countries and the rich world;
- the huge income-contingent differences in access to the Internet that persist.