In referring to the forum members reviewed at
One of the members mentioned the site https://copromote.com/
Our honest reviewed:
We have been in the business for nearly two decades and have tested these sources with proprietary software. We also test heavily with DV and IAS for quality. None of them have passed DV and IAS and our systems have all flagged it as BOT. It is simple to do with a mouse tracker and viewability metrics.
When clicks happen within a site but the mouse never moves, it is a Bot. When clear pixels designed to trigger on focus never fire, the traffic is never seen which also indicates BOT. We know exactly how these Fiverr guys do it and choose not to go the same route.