I just got an email out of the blue from the editor at Big Journal in My Field, which published, about a year ago, my most significant article to date. The editor was inquiring as to my interest in reviewing a submission they'd just received, which would have been cool enough on its own--but according to his email this submission "cites your own work on the topic, your essay in [Journal], as the point of departure and framework for [the author's] methodology."
As George Washington Boyfriend pointed out, what this probably means is that the author is violently attacking my article and its argument. But so what? Right now, I'm just excited to learn that someone actually read the thing and had some kind of reaction to it--not to mention that I apparently have a methodology! Who knew?