I discovered Ancestry shortly after my husband died,he had tried finding out about his father's parents but his dad didn't know much, since they died when he was young,and we had had no luck with other surviving relatives so this seemed like a good idea. I was horrified when I recieved a hint ,one of those family trees and there he was attached to it,one of these was genuine, but the other had both of his maternal grandparents lines and he was an only child of an only child.It took me a while to get over but I decided to ignore it ,and that particular tree owner I automatically ignore . I know my tree is not 100 percent accurate but I do try and verify each addition as I make it.
Liz