At around 3am today I noticed that 2 ad units had an unusually high value. These units usually have an RPM of around $1, but this time one was around $110 and the other was $80. So 2 clicks had generated almost $100!
It wasn't a click bomb, each unit just had a single click. And after those 2 clicks the value went back to normal.
I haven't seen this one before so I'm not sure what to do. Do I report it and get Google to investigate? Or just let it go and see if anyone says anything?