Don't say Affiliate marketing. You spend 20 minutes explaining the concept, then they still don't get it. I say I'm a male prostitute and their mom tips well.
Tell Google that you suspect a fraudulent click happen to you site and asked them to inspect it as soon as possible.
No matter what you do people will be jealous because they always assume that it's something easy to do. Every infomercial seen late at night makes this stuff seem like it's easy, like everybody should be doing it. I tell someone I'm a webdesigner and they want me to design them a website, for free! Like Jondoe0069 said if you tell them you do affiliate marketing it's too complex. Some people immediately think "pyramid scam". I think the best answer would be online advertising and don't give them your site ever.
First thing I say is "I make money online" and the first thing that comes out of their mouth is "OMG you're not doing porn are you??" and then I must explain that I'm a web designer. However many of them look at me rather strangely since I'm only 15. I say go with what everyone else said. Explain to google you suspect click fraud and I'm sure you won't be in any trouble.
google has so many ways to track clicks. cookies ect. I read a article on this before I cant find it now
What email can I reach google adsense at? I've breifly looked around their adsense site with no luck.
The so-called friends appear to be a real pain in the a$$ sometimes. Happened to me as well, e-mailed Google about it and everything worked out just fine.
lol @ your friends, they pissed you off serious you are in danger, tell the truth to Google Adsense Team and Save yourself from getting Banned 93% CTR OMG!!
That's why you should never tell your friends about your website. Sometimes they get jealous. It happened to me.
im surprised your not banned already with a 7% average ctr, i think google investigates site who have a consistent 5% + ctr because its just not normal unless your provoking them to click on the ads! As for telling your friends, their just having a laugh and dont know how serious the consequences are for you as i imagine you didnt explain to them you get banned by google for such things!