Users who want to keep their private business private when online often turn to VPN (virtual private network) providers. It’s a sensible precaution, and when you search for terms related to online privacy, it’s SEO-optimised, VPNpromoting articles that occupy the first few pages of results, because VPN companies pay out up to 60% for sales through affiliate links. Want your online tech publication to flourish? VPNs are where the cash is.