If that is his site, then I don't really have a big problem with it. The information was semi-alright and it looked legit enough (although there were a-LOT of google ads).
Google only allows 3 ad's per page and that is what is used. The page length is very short so it could be that a higher percentage of the screen is ads than other sites. Still, it comes nowhere close to magazines which are probably more than 50% ads.
http://www.acaiberryproducts.org/
#4 result for "acai berry", lots of small articles, and tons of AdSense.