But then again, you have different types of weblogs. My business weblog is structured far differently than Ranchero Software's blog (Rachero's most famous product is probably NetNewsWire. The former has long articles posted to it, either status updates for projects or research/development/general opinions. The latter has very short snippets, sometimes linking to articles, sometimes linking to beta versions of products.

Despite their differences, I personally consider both weblogs. Why?

Weblogs (tend to) add value to a link. It could just be the act of linking, from a well-known blogger that adds value to it. It could be insightful comments posted about an entry on a blog (for example, see my pyobjc article on wilcoxd's blog where, in my mind, the most insightful thing about the entry is not the "Oh wow, this is neat" entry itself, but the comments explaining, in this case, the background mechanics of pyobjc.)

A weblog is also about the opinions of the author. Talk Jonathan Rentzsch's 10 Things I love/hate about Objective-C for example. Or maybe just the infamous "here's a picture of my cats" post.

Having said all that, Rebecca's article has a little pie graph that illustrates the average content of blogs pretty well.