Take an image from a webpage, manipulate it and mail it to a friend? Why not simply
right click on that image, use "Open with" -> "Gimp", manipulate it, copy and paste it to
that email. There is no need to save any version of that image in any directory in that
example. Works perfectly well in KDE and I assume that gnome has similar capabilities.
There are for sure use cases that can profit from improvement. But this example seems
to be pretty badly chosen.