I get so many, but these take the cake:

"I would like to test your software

I have a picture of someone who I believe is wearing a simply disguise covering their eyes with sunglasses. It is personally very important for me to find out if this is the same person that I know. "

And

"...what I'm really looking for is...just to be able recognize simple objects, for our purposes, parts of the anatomy. How about a search for pictures that include an an arm, leg, head, etc?"