It looks as though the rest of their site is still up, just the forums closed for maintenance.
Don't worry about mentioning RAUK here, they're certainly not considered to be a rival in our eyes. Any non-commercial wildlife forum is fully supported by us, as Wild About Britain is all about promoting British wildlife organisations, not competing with them.
In fact, if they need a hand getting their forum back up and running and want to know more about our system, then we'll be more than happy to help where we can
Stuart