I had an email on my forum the other day from this company. https://www.yieldkit.com/publisher/ I dont usually give this sort of marketing the light of day, however I remember using skimlinks and that they weren't too intrusive, who these claim to be similar to. They also mentioned my usage of the service a few years back. No idea if its a guess they know i used them, of if skimlinks sold that info on. Has anyone experience of working with them?