Actually on "one-line articles", my preference is for articles (or at least article intros) that can fit into the first screen. This is an internet encyclopedia and if you can't say something useful in the first paragraph then the reader will wander off to another site. If an article can be written well as a single sentence, I think that's a good thing--indeed an ideal to aim for.
"Article intros that can fit into the first screen." Oh, absolutely, by all means.
Now I'm going to pretend that I didn't read that key qualification and tear off onto a rant.
ARTICLES that can fit into one screen? No, no, no. That's not an encyclopedia, that's the Britannica MICROpaedia.
An encyclopedia is not about data, it's about knowledge.
An encyclopedia's job is to make knowledge _accessible_. An encyclopedia explains. An encyclopedia _instructs_. That's what the "-pedia" part is all about. An encyclopedia is supposed to synthesize and make sense of topics.
And this is where I stopped reading your mail, which I found to be way to long. I (and almost everyone else) do the same thing for articles.
-- Mvh Björn