Create a reuseable HIT for Amazon MTurk

I am looking to create this, but I am not sure if this is possible with the current Amazon Web Services API and implementation. If it is, please bid, if it is not possible, don't reply and say that you can do it when in reality it is not possible. ------------------------------------------------------------- Task: Create an Amazon Mechanical Turk HIT that creates a spreadsheet for all the entries done by multiple workers, but checks for duplicates, so the same information is not being paid for twice. For example, this HIT is posted, and 5 people can work on this HIT. I do not want those 5 people to post the same website information into the contact list, creating 5 duplicate entries. ------------------------------------------------------------- Requirements/Specifications: 1. A reusable HIT that can be applied to different categories, jobs, etc 2. An HIT that can create and support a contact list spreadsheet 3. HIT must be able to support a contact list of up to 1000 contacts 4. A worker who submits information through this HIT will have his/her information checked to see if there is already an existing data entry with the same information. 5. Must be proficient with Amazon Web Services ------------------------------------------------------------- Spreadsheet column categories: NameofBlog - text field 80 characters WebAddress - text field 80 characters ContactFirstName - text field 30 characters ContactLastName - text field 30 characters ContactEmail - text field 80 characters Description - text box 3 lines, 100 characters each line, 300 total characters The categories that MUST HAVE UNIQUE INFORMATION are: WebAddress and ContactEmail ------------------------------------------------------------- If the following values are not customizable, then these are the default values. HIT assignment duration is 1 hour HIT Lifetime value is 5 days Auto Approval period is 10 days If they are however adjustable, then I would like to adjust them as I please, and you do not have to define these values. ------------------------------------------------------------- Turnaround time should be no more than 1 day. Payment would be for several hours of work. If there are any suggestions for me to improve this posting let me know. I have read all about the API and Developer manuals on Amazon's site, but am relatively new to this platform.