HAH! It worked. Did you enjoy being rickrolled, Twillow?
This case was just a harmless joke.
But, it showed mods are humans, not robots. When you warn them not to do something, the curiosity might win and make them do it anyway.
Consider this also as a warning everyone. I have seen links that support a RuneLabs page when clicked. I'm not sure if it's possible to make a link to ban someone and then lure a mod to click it. At least you cannot get hacked on this site, but I still recommend checking the link url before clicking something suspicious. Jmods should probably disable some of the links.