Any one else watch Aus Neighbors on youtube? .. Seems a certain person who posts and all their videos has completely vanished from the site

I've noticed that too. Thats why I simple search by typing Neighbours following by the episode number.

I dont, but I know the account that posts them. It would seem the account is closed now. But, you can watch them on these channels..

http://www.dailymotion.com/Marit_Kruse#video=xua61m
http://www.dailymotion.com/Soapalien#video=xu8if8

They're illegal uploads, they will get taken down as soon as the powers that be find them. Best not to post links or talk about them at all or they will all get removed.