A copy of Aestheticism's very useful guide to sound effects in manga. Originally designed to explain onomatopeia in their Yu Yu Hakusho doujinshi that featured Chibi-Hiei, it can also apply to any other manga out there.
The Smileys(Emoticons) are used very often in the sentences of e-mails. They started in USA where the internet had also started of course. In Japan, the Smileys(Emoticons) grew in different manner from U.S.A. Now, there are several kinds of them.
Sarcasm is usually innate; however, if you would still like to attempt developing this ability, your chances of success would be greatly increased if you are intelligent, or at the least not mentally incapable of detecting and reproducing sarcastic remarks.