When I first saw this piece of anti-advice I have to admit I went and tried it right away. I went in AV and typed in /bg, "Man... look at all these AFK people." A few folks responded and agreed with me, annoyed about it. "Type /afk list and report everyone that comes up, please," I say next.
I kid you not – 15 people immediately afk'd out. At that point I started getting some pretty hate-filled tells, so I decided to /afk out myself.
But nonetheless, I just about died from laughter. Of course, this is kind of mean, and just a tad underhanded, but really... sometimes things like this are just too funny to pass up. I tried this again later in a AB match that was going awful, and after I told everyone to type /afk list, someone replied "Yeah, wow, look at all those people." He then sent me a tell: "lol! I've been doing that all day!"
All the people that were dragging us down left the BG, and new ones came in and we won. So maybe this isn't that bad of advice after all...