Both!
Simple concept for the game, coupled with the difficulty of certain iamges that you've given us. The best thing that you did for this was removing the colour of the pictures, as that way it really does make it quite a challenge.
I thought that I'd do really well with this game, but first time out, I got 17 of the 21 available, so it proves that under the time limit, you've got to think very fast in order to get the answers right.
A good interface and the only issue that I really had with the whole program was the audio track that you used - it could do with a mute button, just to preserve my sanity :P
[Review Request Club]