[aussiblue]

Could be that like some other old car forums I was on those running them have got too old to maintain them, have decided they should spent more of their remaining time with their grandchildren and other family or have simply passed away. The sad truth is that old car forums are usually run by equally old people and nobody lives forever.
Some would probably say "old bangers and old farts together pass away " or worse. Wait until EV's become mainstream and watch all these forums sadly vanish.