nice man, whats your site? I'm in the photography niche also. You can see my photo editing CB site at www.DigitalPortrait.net I would put adsense or ypn on it but that would lead the customer away from buying my service :-\
RON = Run of Network ads These are the ads that are shown when YON is temporarily out of inventory, or when the algo is having trouble figuring out a page's content. Vonage and LowerMyBills.com are common RON ads.
Wow, that's pretty cool, definately let us know if you get anymore freak clicks. Have they been normal for the past couple days now?
You are right, if you put adsense/ypn then chances are that your visitors will go away thus harming your core business.