How to post blank Status Update?

If you want to post blank just type ‘@[0:0: ]‘ without quote in your status box and hit enter you will see images like this

but this trick will not work in chat box.

Copy Code : @[0:0: ]

Steps to post blank comment:

 

 Go to comment box to write comment.
 Press and hold ALT key and type 0173 (Dont leave ALT key and type 0173), now leave ALT key and hit  enter.
 Now, you posted a blank comment.

 Enjoy.