Viral Promo/Coupon Code Promotions
You may want to keep this site in the back of your mind if you're ever asked about viral promotions: Simkl - Promo Manager
If you watch the video, everything is pretty self-explanatory..
This would work great with QR Codes or placing a link on the clients website or facebook page.
Just wanted to pass this along, I was looking for a solution earlier today and ran across the site.
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