I'm as much a fan as anyone of really well-done April Fools gags. (Google Romance comes to mind). However, an April Fools prankster oversteps their bounds when they say things like, "It's a shame this happens on April Fools Day because nobody will believe it," and then of course, when you click the link, it is, in fact, an April Fools joke.
Because (in my not-so-humble-opinion) April Fools jokes are supposed to hook you in with their believability (or, in some cases, their downright outlandishness, such as the Wireless Extension Cord), but what they're not supposed to do is acknowledge April Fools day and be like "this isn't an April Fools joke", and then actually be one.
That's just silly, IMHO, and shows weak imagination. But, of course, it was a /. article, what can I expect?
The Y! watermark for corp users implemented in the firewall that broke Y! messenger internally was a good one too :) (background: this was shortly after the geocities acquisition)