This requester has a bad reputation, I wouldn't do work for him if I were you. if you use turkopticon you can read the reviews on him, it is something you would have to download as en extension for either google chrome or firefox.
You can read the reviews without using the extension. Example: http://turkopticon.differenceengines.com/ARMTDA0J5RMXE
I think he is a spammer personally or something. Never work for him, he rejects most HITS people do for him. Amazon should have banned him. Add/download turkopticon to your browser- and avoid him and anything with bad ratings- It will show up as an arrow next to their name on mturk and you mouse over it and can see what ratings they have.