UGC within the voucher code space has been a contentious issue for quite some time prompting many a discussion at the IAB Affiliate Marketing Council and earning itself a reference in the Voucher Code of Conduct.
However, the affiliate industry to date has struggled to find any real consensus on how this area should be managed and regulated, and as a result one of the key players in the market has embarked on its own version of UGC within voucher codes with a 'social codes' platform.
It's well known that the affiliate channel works on a cost per acquisition (CPA) model, meaning that when the desired action is completed, be it a sale, lead or quote, the affiliate is paid.
To be able to attribute the sale to an affiliate there needs to be an agreed metric by which a sale can be attributed.
Typically this is a 'last click wins' model: if the last click is attributed to a particular publisher then they receive the commission.