Having consulted on document management concepts for over six years, I agree that printing blogs (or any Web page) is unnecessary. Indeed, in the majority of cases, I've found that electronic documents rarely need printing--most people, at home and at work, are capable of receiving and processing documents as PDFs, Web forms, and other formats. And, increasingly, incredibly powerful document workflow software is available to not only reduce reliance on paper but make business processes significantly more efficient.
At the very least, there are free solutions for bookmarking Web pages. Personally, I use Onfolio, which is available here. Note that it requires the Internet Explorer Live Toobar.