Novelty - This isn't quite innovative or creative, considering that all the sprites are taken from in-game, but the author took his time to extract the sprites and convert it into a .gif format.
Usefulness - The sprites can prove to be quite useful in forum posts,etc. But I can't really think of a real use for them.
Quality/Instructions- The sprites have been poorly named and organised. I'd suggest giving them the name of the sprite would be enough. Although mostly everyone knows how to use images in forums, a brief tutorial would have been nice.