Actually I've recently read an article that basically questions PoFs claims. It was a few years old, from when he was still running adsense...but basically it raised one question..."if plenty of fish is as successful as the guy claims(still had that 10mm/yr number back then)...why isn't he an adsense premium publisher?"
Basically it implied that the only reason Plenty of Fish took off, was because the guy lied his ass off early on when he was making a few grand a month, saying that he was making millions, which got him a ton of coverage which in turn eventually got him more users, which in turn led to the $1mm/yr number.
And that even now the numbers he is putting out for consumption are nowhere close to reality, and is just a way for him to get more free marketing.