Mim's Bits has a contrarian post about the e-book adoption rate that most pundits assume will be skyrocketing sometime soon. It's worth a read:

The signs of a hype bubble are all around us. Mostly in the form of irrational exuberance.
...
Here's the reality this kind of hype is up against: back of the envelope calculations suggest that ebooks are only six pecent of the total market for new books.

How can that be possible, when Amazon recently said that ebooks are outselling hard-cover books at Amazon.com? Easy: Amazon is only 19 percent of the total book market. Also, Amazon has something like 90 percent of the world's ebook market.

Also worth it? The comments on the post, wherein people take sides on the pro and con sides of the e-book issue and make intelligent, passionate arguments for and against them.