Reddit should really try to proxy / VPN / Bot detection because I'm willing to bet the people on fiverr are using large proxy networks to achieve this.
There are many traffic exchange sites that use automated software to click or view ads. Most of them run on server ips or they're using a proxy. http://getIPIntel.net is a free and useful service to combat bad / low quality traffic. Though to save you money, your advertiser needs to not bill you for automated traffic. It's unlikely that'll happen because the more views and clicks, the more money they'll get. You can still use GetIPIntel's api to help you pick which advertising company gives you legitimate traffic.
One of the better ways to find these people using "unofficial" APIs is to look for VPN / hosting IPs. Running all of it on their home connection is very obvious so they'll branch out and let their bots run on servers 24x7. Based on the IP address and their account activity, I think it'll be a lot easier to catch botters or at least catch the big fish.
The slides mention IP reputation and a great free resource for that is http://GetIPIntel.net to make sure unexpected IPs don't connect to your services.