I checked out his site and it seemed like more hype than substance. He claims to be learning a language every three months for the past seven years but so far his list of languages is not terribly impressive, at least by European standards. There are eight languages in the list (aside from his native English). Out of the eight, one is still being learned (Hungarian) and four are from the same language group (French, Spanish, Portuguese and Italian). It's not a huge leap to become conversationally fluent in Portuguese after learning Spanish, especially if you can live in Portugal. I'd like to see how far he gets with Korean or even Mandarin in three months.