Might the lower stats for Sparks be simply down to the nature of the "product" the QR code is connected to? Details of a marathon for a charity will surely have a smaller target audience than "get your cut price headphones here!"...
Might the lower stats for Sparks be simply down to the nature of the "product" the QR code is connected to? Details of a marathon for a charity will surely have a smaller target audience than "get your cut price headphones here!"...