I posted a movie that after 30 days was never solved. Now I am sure we all could find ridiculous scenes that would never be solved but my goal was to find a specific scene with characteristics of the movie in said scene/picture. I did just that and am proud to say it made the whole 30 days going un-solved. I just check it and it has "solved (1x)" but I believe it was after the 30 days
I don't think that posting shots that nobody can solve is a good thing (even if it's not for artificial reasons like voluntarily choosing a shot that has nothing recognizable on it). It's just annoying to people not to find anything. A good screenshot is one that can be solved by about 20%-50% of the people trying to solve it.
I'm not saying people should post a picture showing Harrison Ford's face as Indiana Jones every time (that would be way more than 50% :)) but the game is much more fun when we actually find many answers, than when we parse through 20 pictures without identifying any... Even with reasonably easy shots (either tricky shots from a well known movie or really representative shots from a little known one) good players will have better scores than not so good ones so it really doesn't change much to the game (if the competition is what you like) and it's really more pleasant to everyone.
That being said, having one very hard screenshot every now and then is not a bad thing either, it just shouldn't be the general case.
And I can't pronounce it strong enough: post easy shots ppl!
Everybody who complains about the platform to become more and more a playground for nerds, should start with him or herself and upload Raiders of the Lost Ark :D
Seriously: Post easy shots. If the qualitiy is right and you don't just see the face of a famous actor the shot will be 100% approved. I'm also missing funny shots. I don't have the statistics, but I think we have more blood/gore movies than comedies.. wuah