My mate Anders sent me in the direction of this smart website, the denizens of which attack the boundaries of their world, pushing them open from the inside.
Being contextually relevant and playing off the environment you're in has long been a way to add impact to communication - it can even turn urban spam into something quite charming. Sometimes. Great to see people doing it online with the browser window.
The window is only a metaphor so there's nothing to stop you mixing it with some others, once in a while.
Apart from a pedantic adherence to the classical rules of literature.
Metaphorically speaking, as we're talking about a different class of metaphor here.
I mean metaphorically writing.
Best leave it there.