¤»¤»¤» (kkkk) is Hangul (the Korean alphabet) for hehehe or just giggling in general.
Cyworld, the Korean
Myspace, is full of this word on every page. It is also used in instant messaging, similar to the use of LOL for
English conversation. It is also common to see ¤»¤»¤»zz (since the ¤»
key is on the 'z' key.)