Just an FYI, that script still uses the old file-based system, so any of the games added in the past 6 months will not be on there. The best way to find out is to just click the submit info link in the nav bar, then select add game images. Bring up a list of games you want to check by filling out the search parameters, and it will show you all the games and if they have images or not.
I knew I could do that but that's what I'm trying to avoid doing. I don't really want to go through over 1,000 games by typing in over 1,000 titles to see if they have images.