An Awesome Idea, Accidentally

Title of this Ars Technica article: HP makes printing to an iPad easier with Wireless Direct printing.

I’m pretty sure that “printing to an iPad” was a typo and they meant from, but think of how awesome that would be: what better way to go paperless than to have an iPad masquerade as a wireless printer, accept documents “printed” your PC and turn them into PDF’s? Somebody make this app please, or direct me to one that exists!