In application development the terms horizontal and vertical development are sometimes used to distinguish two approaches. Vertical applications target a specific group of users; like health care or insurances in which they support the entire cycle of information management. Horizontal applications target one specific aspect of information management, like word processing, and try to provide this for almost any user you can imagine.
Perhaps this is somewhat farfetched but I think I see something somewhat comparable in blogging as well. See it as going horizontal or vertical through time.
A horizontal blogger slices through loads and loads of blogs and presents a list of interesting finds. Try interesting finds on Google, hit #3 and #4 will direct you to the (old dnj) blog of Jason Healey. The majority of his blog posts are a list of links; Codebetter is happy to be a supplier for such a meta-aggregator.
A vertical blogger is building post upon post; a lot of CB'ers do that. Take Raymond's series on database basics or David who usually finishes his posts with a list of related posts. This way blogging turns into (thanks to comments) a form of interactive publishing.
Just a thought...