sorry but you are misinformed, just cuz something is on the net don't make it truth,and someone's opinion don't change the fact's.
If Jeet Kune Do were the bomb, people wouldn't be doing everything else to prepare for real fights. The only gym that's produced fighters trains "Jeet Kune Do
Concepts". Catch is, it's just MMA with some eastern philosophy thrown in. Bruce was a great performance artist, but there's no evidence he was a good fighter. That's like thinking Jet Li would maim people, when the reality is that Wu Shu is just a performance art.
and that site's mission statement is to debunk fraudulent claims in martial arts. It's a gold mine for finding out what works and what doesn't from people that actually do it for a living, instructors, olympic champs, military, amatuer & pro fighters, etc, etc. It's the only forum on the internet that literally results in people getting beat up.