I don't think any discussion of Open is really complete nowadays without a reference to the
Open Reloaded edition.
Open has a very particular focus which can often cause people to overlook the possibilities of the system in the wider context. Thus Reloaded was born as a kind of primer on the system, with some additional wrinkles, bells and whistles as options to tailor your game a little.
Furthermore, there are more resources than you can shake a stick at on the
Wushu Wiki, including a
complete index of Wushu threads on RPGnet.