I Have a Warning For You

Please note it has been pointed out to me that any pictures you send by private message to another on here can also be found by anyone else searching google. Not sure how it's done, but if you do send any photo's to a friend I would suggest they be totally anonymous and non raunchy " for want of a better word ".
The example I was given was to right click on any private message photo and click “search for image on google” sure enough it’s on google.
So much for private messaging !
UPDATE ! The answer is to delete from the message and it's then deleted from google. I've just tried it !!!!!