These opinions and ideas are then categorized in an "archive" type format, with newer posts being shown first, and older posts last. This was different from a normal website, in that normal websites consist of numerous pages, not necessarily with dates at all, that are intertwined together through links. Blogging is more about posts, that are added frequently, requiring small amounts of updates.
Now, blogging has become a business. There are popular blogs out there doing some serious numbers, in the millions range. Many businesses also have blogs where they regularly post news on their companies and updates.
Anyways, a personal blog, over time, can build up some serious sentimental value. If a blogger has been blogging for a total of three years, that would be quite a bit of content.
A business blog can carry the same effect. Any ProBlogger, will have devoted some serious time and energy into building up their blog from start to its current state.
So, for these types of bloggers, a hard copy of their blog may be something very beneficial. Not only would it allow them to actually sit down and read their blog, in book format, but it would also allow them to distribute their blogs to the more, "non-techie" type of reader. Better yet, sell a full printed copy of the blog.