I speak with Matt Gillis, CEO of clean.io, a tech company specialising in malware and voucher fraud. From a customer point of view, voucher extensions such as Honey are fantastic. No more scouring the internet for discount codes, you just hit the button and it automatically checks for you. But for a business the effects can be devastating. Along with losing 20-30% of most of your sales because everyone is getting that voucher code, you also lose the ability to track a lot of your promotional marketing.