I replied on the main forum and I'll reply here too:
You should really change the wording, especially on the website, that you COULD win a $200 gift card. Or you are eligible to win said gift card.
More information regarding the story would be helpful. Do you want a potty training story? A story where my kid swore in public? A story of my kid learning to walk?

I am a parent in DC and I have a start up that is building a product to help parents. We need your help and you could win a $200 gift certificate. By sharing a nanny story about your child age 0-5 and answering a few questions; you will not only help us build a better product but you will potentially win a $200 Amazon gift certificate.

http://www.work-around.com/stories

Thank you for your help.

Marshall