Google Image search is definitely cheating. I’m not suggesting ever using that. I’m sorry I’m not making this more clear. No GIS. The posts above are all about “normal” google text searches.
In fact, I’m not even suggesting that you should use google (I mean text search here) to search for content (text or otherwise) in the images. But it’s a weird line. In the movie game thread, sometimes it’s essentially cheating to search for an actor you recognize in a movie you’ve never seen. And then place the setting or whatever to figure out the movie. But if you vaguely remember the movie and it’s on the tip of your tongue? Maybe imdb is ok. Maybe. Everyone draws their line somewhere different.