As a Flickr alumna, it was lovely to see the Flickr kids use the Toner map in their 2012 April Fool’s prank. You can see an example in the right column here:

Photo by Schill, CC BY-NC 2.0.

A tribute to the Mac Classic UI, as well as using Toner, they wrote YUI/Canvas JavaScript to dither photos across the site for the duration of the prank. Fun!