Your experiences make me more determined than ever not to place my very large, but well researched, tree on the web. I have never copied any information...well never found an actual tree about them anyway..... My OH's family are mentioned in several online trees, errors and all.
Someone who is not even remotely related to me, placed some of our family information on the web linked to their own web page. Not in tree form. When I eventually received a reply to my criticism of having living people listed [my father was mentioned and is still living] I received the comment 'Are you sure?"

I was also informed that his birth is available on the bdm disks for Victoria...but does that give this person the right to place his details online. He is hoping to make 100 and is nearly there

His name is still on the web however the contact email address is no longer valid.
I have also been informed that my complete family ie parents, siblings etc. is on genes whatever. We are all living. My friend, who is a member has attempted to contact the owner of the tree, but to date has received no response.
I feel sad and angry when I view the information about my father but always remember what he tells me..."it's incorrect and it isn't important....friends and family who matter know the correct information...and you keep telling me don't believe things just because they are on the internet". Wise old bloke

Cheers
Cando