I subscribe to his site; his reviews are the only ones I've come across that are worth anything. He has a "numbers" system regarding a skis willingness to carve, skid, how damp it is, etc. From the skis I've demo'ed, I've found it to be pretty accurate.
He also gives each ski little symbols regarding its suitability for powder, ice, trees, bumps, etc., which again I've found to be pretty accurate.
The one issue I have with his reviews is his use of the "skier suitability" scale. He uses little black, blue and green skier icons to indicate what "type" of skier a given ski is suitable for. Wow! Reading his description of a "black" level skier makes you wonder who -- outside those racing on the world cup and those featured in ski movies -- could possibly qualify. Ok, high-strung skis require some decent skills, but you don't need to be a ski god to handle modern skis.