We have to view many images and have always allowed images that did not contain too many additional elements in them..
Also we expect that all photographs taken are by the person who posts, hence why no stock images etc as Bruce points out. 

I can well understand the purist perspective, and perhaps a further Genre of having a postworked which has been debated before.. At present any  parts of an image that are not photography must not be no more than 40-49% of the image... 

As Bruce has said it is not a bad idea to have a new Genre if anybody else has an opinion let us know..
 

Danny O'Byrne  http://www.digitalartzone.co.uk/

"All the technique in the world doesn't compensate for the inability to notice" Eliott Erwitt