It's got to be some stupid script "helping" the editors.
Imagine you were serving content-contextual ads. You could show an Amazon ad here. So some idiot figured "if it's close enough for the advertising department, then it's close enough for the editorial department." The problem is that they never tested it, and nobody at Slashdot actually reads Slashdot so they're unaware how ridiculous it looks.
Let this be a lesson, folks: if you don't eat your own dog food, then you have to test your dog food in the lab. But FFS don't just throw it out into the world with nobody looking at it, or everyone's going to be staring at you.
Back to on-topic: I don't understand how there's even a question here. The entire point of Amazon's Echo is that it's a bug in your home, that you're wilfully giving up privacy to have someone else's computer constantly listening to you. If it weren't listening, it couldn't work.
This is like someone saying "I didn't have a flight but I forged a boarding pass, and then bribed the TSA worker with a hundred dollar bill, saying 'rectal exam, please.' His fingers were so cold! Anyway, the next day, I couldn't get anyone to tell me whether or not my privacy has been compromised. Why are they so suspiciously silent?"
This is opt-in surveillance. The only problem I have with opt-in surveillance is that The Truth (people are idiots) makes me feel uncomfortable. But knowledge is a good thing, whether I'm comfortable with it or not.