... Two words I believe effectively describe blog entries / articles-plus-comments like this Naomi Wolf piece. Useful because it reflects the habit of glancing to the scrollbar and quickly inferring just how many loons, ranters, trolls and occasional eloquent, passionate voices have been prompted to wiggle their opinion-fingers over a keyboard. As in:

Maaan, that piece was so totally scrollbar, dude.

or

Scrollbar-bait if ever I saw it.

It might even make a plausible insult for people who do stimulus-response rants on a range of easily predetermined topics. As in:

uh huh... uh huh... yup... yup... uh huh... y... look, sorry, but would you mind fucking off, scrollbar-features?