It could also be one of these autosurfing apps trying to bump themselves up your link list
A while back we had an affiliate sending in over 5000 a day from
https://www.otohits.net/. Complete waste of time as its just a bunch of webmasters with an autosurf app running in the background. Overall he sent in over 3 million hits and not one single conversion
Now we have another one sending in around 1,500 a day. Every single one says its from facebook.com or google.com but strangely around a 3rd of these appear to click onto our join page although not one of them has ever actually submitted it.
Its clearly bot traffic but i dont understand the reason for it. We are not sending anything back and we only pay out when a user converts so why bother ??