Seems like a simple problem for Facebook to deal with: User clicks more than one ad per [pick some time threshold -- hour] on average ==> probably bot. User c

Seems like a simple problem for Facebook to deal with: User clicks more than one ad per [pick some time threshold -- hour] on average ==> probably bot. User clicks more than one ad per [pick some time threshold -- minute] ==> probably bot. User clicked more than [pick threshold -- 20] ads in a month ==> probably bot. FB doesn't even need to get these numbers right, it just needs to set the values so that false positives cost it an insignificant amount of money.