Not quite sure where to post this, but I just discovered this feature recently and think it's important for everyone here to know about.
1. Go to Google.
2. Click Images.
3. In the search box, click the camera icon, then "upload an image"
4. Select any image and it will return the results for wherever else on the Internet that pic exists, and even other similar pics like it.
Is there any way to protect ourselves on here? I'm kind of nervous about posting pics now for fear that at some point someone might upload a pic of me and have it lead them straight to this forum!