MS Paint has always been great because of its low low learning curve. we have lost and gained some cool features over the years - up until '95 (was it) when it was still called paintbrush you could replace colors even. That was a sweet feature. That being said, the artist wastes a lot of time fixing stuff he drew the grid over by not making use of the cut-paste transparent background effect.

hmm, image what he or she could do with photoshop/gimp!