Source: as best as I can tell these six images were likely gathered and arranged by fulme. (The top-center image seems to predate this assemblage.)
In theory, I am a proponent of bricolage.
However, if you are working digitally, there is very little that isn’t at hand for you to use. To me this muddies the already precarious distinction between ‘formal’ collage and MacGyver free association.
I don’t know how to illustrate it except to point to another image that was making the Tumblr rounds back in early October. It’s a really solid idea but the execution is lame brained–half a grapefruit on a white background super-imposed over what looks like the legs of a model wearing a white one-piece American Apparel swimsuit.
On the other hand, the six images above were carefully selected. The similarity in tonal range and luminosity is striking. Further, the arrangement serves to activate the images in different ways, promoting interplay, building and relieving tension by means of line, color, echoing of shape, conceptual mirror, etc.
Highly astute work deserving of recognition.