Yes. Working solely from online sources might seem complete, but the result is impoverished research. It's like a fish in a fishbowl assuming it's got the full depths of the ocean at its fin-tips.
I've gotta fall on this side of the argument, despite being an avid internetter myself. There just isn't enough content on the internet in many situations.
Maybe when Google Books finishes scanning everything.
edit: that said, "Bits are brittle." is the lamest pro-book argument I've ever heard. Bring on the e-ink!
