How to post blank comment or status On facebook

First Go To Comment Field Where You Want To Post Comment or Status.
Then Hold Alt Key And Type 0173 From Numeric Pad.
Press Enter To Post Comment.
OR
Paste this string into the text field: @+[0:0: ] and remove '+' sign.
See the magic.

How to use smileys and emotions on facebook

Smiley	Expressions	Code
	smile	:-) and :)
	heart	<3 td="">
	face	:putnam:
	devil	3:)
	glasses	8-) and 8)
	kiss	:-* and :*
	tongue	:P and :-p
	grin	:D
	gasp	:O
	frown	:-(and :(
	upset	>:( and >:-(
	curly lips	:3
	confused	o.O andO.o