automated solutions will *never* replace human interaction for this. it's a moot point. these scripts you spend a shitload of money on will only save you three steps in validating a gallery.
you'll still need to check it for decent design, number of thumbs, etc. no automated script can easily detect the difference between a banner ad or other image vs. a thumb.
the only thing you can do is to take a "snapshot" of the html as it is when you approve it using a human, and then have a script compare that snapshot at random intervals. if the source html doesn't change, either will the quality. if it does, kill it or put it back on the pending/"need approval" list.
