I've noticed that, with only /dank/null installed, there is an apparent light given off. It would be less obtrusive if it gave off a light level equal to the level it gives when placed. As it is, when you place a torch, it magically gets much brighter. And if you drop a torch, it gives off a ridiculous amount of light. Don't drop two torches near each other or you will be blinded.

It would seem that this is from p455w0rd's Library, not /dank/null itself.