Like so many of you, I changed my tree to private.
I delight in sharing information, and am a firm believer that if you give help you will receive it back.
I changed my mind about a public tree though, for the same reasons as many of you - other members taking my information, linking it to the wrong people, and then sharing it with umpteen other members.
The photos that have been passed down through my family are treasures, not to be hoarded and kept secret, but also, not to be used with no thought or care, which to me shows a complete lack of respect.
As an example: my great grandfather was 'lifted' from my tree and added to a completely different family, along with his photos, where the borrower MARRIED HIM TO AN UNKNOWN 6 YEAR OLD. He was a deeply religious man, who would have found the very idea appalling. Despite the mass of documentation for him in my tree, which should have made them aware of their error, the person who did it ignored my requests to remove him. Then, he started popping up in the trees of other people I'd never heard of, along with our precious photos.
Infuriating, insulting to his memory, and unstoppable.
A note - even if you do change your tree to private, check it from time to time, as mine mysteriously made itself public again, though I had not touched the settings!
Caroline.