This is the third time this month I stumble upon my own pic in someone else's profile. You can't use any pic you find on google ! It's a different story if it's a stock pic. When you click an image on google you see a link below or on the side depending on your web browser.
Click on it! Find the contact info and ask permission or type where the pic was from !
Google view when you click on a pic
Ta da! What you see when you click the link. Now you know where the pic was from ^_^
I really don't want to start marking pics