nanna8
I use ancestry for researching my tree and sometimes I don’t correct mistakes or forget I have made them because it is not my main tree. Lo and behold people copy my mistakes and claim them as part of their trees. I always check every single thing from other people’s trees because there are a lot of inaccuracies, particularly some of our American cousins who like to trace things back to the UK.
Unless your tree has been checked and double checked for accuracy then it's probably best to make it a private tree. People will always copy information from a public tree, and they will take photos and anything else from it, whether the info is right or wrong.
My Ancestry trees are all private trees, one tree for each grandparent. I encourage people to contact me if they are related to anyone on my trees, then I will send them an invitation to see the tree. I am confident there are no errors (as much as humanly possible) as I couldn't live with myself if I gave people the wrong information. They are not massive trees (about 200-250 each) just direct ancestors and their siblings' families, but they are accurate. When I see trees of 5,000 or even 20,000 sometimes, I keep well clear because I know they will be nonsense. You cannot research that many people.