An anonymous reader writes "At Rough Type, Nicholas Carr examines the surprisingly sharp drop in the growth rate for e-book sales. In the U.S., the biggest e-book market, annual sales growth dropped to just 5% in the first quarter of this year, according to the Association of American Publishers, while the worldwide e-book market actually shrank slightly, according to Nielsen. E-books now account for about 25% of total U.S. book sales — still a long way from the dominance most people expected. Carr speculates about various reasons e-books may be losing steam. He wonders in particular about 'the possible link between the decline in dedicated e-readers (as multitasking tablets take over) and the softening of e-book sales. Are tablets less conducive to book buying and reading than e-readers were?' He suggests that the e-book may end up playing a role more like the audiobook — a complement to printed books rather than a replacement."