View non-public profile photos in full size FB

With this trick, you will be able to view any profile picture as full-sized, regardless of whether or not it’s marked as private.
Attention stalkers: Please disregard everything you’re about to read.
How to do it
1. Go to the profile picture you’d like to see and open it in a new tab or window (on Mac, Ctrl-Click and then ‘Open Image in New Tab’, on PC, right click and then ‘Open Image in New Tab’).
2. Go to new tab or window, to the address bar. You should see a portion of the url that looks something like this:

3. Remove the ‘s160x160’, and hit enter.
Voila! You should see the full sized image in your browser. Note that if the original picture was small, this trick won’t do you much good!