This suggested feature is already in-place, but I think it can be more initial.
I suggest that before you even begin to post a new deal, you have to submit through a "Check the link" portal inputting the URL of the deal before being able to continue.
This will show the most recent deal posts by time. As in, If it was posted 5 minutes ago that deal will show up the top of the list.
There is still a lot of people re-posting the same deal, same link because the list of "Previous Deals" with the URL is not being prioritized by time and date.
You would still be able to click the "Not a Dupe" and continue.
The whole point of this feature being in the Initial process of a deal is to get maximum attention of the deal poster instead of having 5-7 options to select IE. Tags, Link, Description, Start Date, Category which can confuse and distract the deal poster from recognizing the Previous Deals.
Thanks for your suggestion. We have checks for multiple fields on the deal submission form by AJAX, and I'm in the process of doing an audit on that.
At the moment:
I'll look into listing more than 1 match, ordered by latest ones first for URL and coupon.
Edit: Actually, since URL and coupon matches are exact, just the latest one will do.