Outline:
Various posts circulating on Facebook are claiming that, if you type ‘#177’ into a comment and a green line appears, it means that you have been hacked. Some of the posts include a screenshot that appears to show that the test actually works.
Brief Analysis:
The claim is just a silly prank. Entering #177 is certainly not a valid way to check if your Facebook account has been hacked. If you enter ‘#177’, nothing but ‘#177’ will appear, even if you HAVE been hacked. But, some pranksters have apparently posted images of green bars in comments as a way of tricking their friends into believing that the test actually works. The image that circulates with the posts is a screenshot depicting these prank comments.
Example:
Comment #177 and if that green line shows up you’ve been hacked before!???? tag friends see if they have ????????” underneath
Original Source : http://www.hoax-slayer.net/comment-177-hacker-test-facebook-hoax/