I think that whoever it was who created SINbus wanted to create
it originally as a 'user friendly' forum, with a team of experts
(potentially the senior or core members of the enthusiast
community? NOTE: I'm not one of them
)
Whatever it is, it has certainly enjoyed some success since it has
something like 71 members in the first 3 days! sgforums took
300-odd days to reach its peak level as one of the top forums...
now it sits on No.10 
Anyway, I think SINbus may even surpass this forum one day,
TIB529A, you know what? It's up to you whether you want to go and
join, it seems like u have some kind of loyalty to this place, but
there are some pretty good discussions going on there, with the
experts helping out... it's your choice, ultimately!