9
I earned about 20USD per day with Adsense... untill they closed my account. Just like that, I still had 260USD to receive. No prior notice, no warnings... nothing.
At the same time I got an explanaition by mail: "illegal clicks". Trust me, I didn't click on my own ads, neither did the freelancers... So I sent them an email to ask where those clicks were coming from, untill now I didn't get any answer.